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Registros recuperados: 697
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LEAF ANALYSIS AS A GUIDE TO FERTILIZATION OF CITRUS TREE Taiwan Agricultural Research Institute
Mong-Ju Yen; 嚴夢如.
[[abstract]]The use of leaf analysis as a basis for fertilizer recommendation is now widely practised in the U.S.A., and there appears to be increasing interest in other citrus growing areas of the world. Leaf analysis is used to determine the nutrient status of the tree. It is a valuable aid in obtaining a better understanding of the fertilizer requirements of citrus trees; however, the data obtained as a result of leaf analysis must be used in conjunction with other facts known about the tree. The use of leaf analysis for evaluating the nutritional status of fruit trees assumes that yield, fruit quality, and plant growth are closely related to the concentration of essential minerals in the leaves at the time of sampling. The quantity of an element in the...
Palavras-chave: [[classification]]6.
Ano: 1972
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Low temperature treatment and flower development in Ta-Mei-Fua radish Taiwan Agricultural Research Institute
Tzay Fa Sheen; 沈再發.
[[abstract]]A seed vernalizing type of radish was used to find a method to promote flowering in late bolting radish for breeding in the tropics. The relationship between morphological changes of the shoot apex and metabolic changes in nitrogen, carbohydrates compounds during flower development was also investigated. Results indicated that mature Ta-Mei-Fua radish will flower when defoliated of top parts and the root is exposed to 9±1°C temperatures and 16 hr daylight for three weeks. The number of tunica layers on the shoot apex increased from 4-5 layers to 5-6 layers when mature plants were exposed to three weeks of low temperature treatment. The number of layers decreased rapidly to three layers when mature plants transited from the generative stage to...
Palavras-chave: [[classification]]6.
Ano: 1981
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Modeling weather-crop growth relationships in taro Taiwan Agricultural Research Institute
Lu, H. Y.; Lu, C. T. ; Chan, L. F. ; Wei, M. L..
Palavras-chave: Taro; [[classification]]6.
Ano: 2005
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MUTATIONS IN RICE INDUCED BY X-RAYS (A PRELIMINARY REPORT) Taiwan Agricultural Research Institute
Tien-Ding Chang; Sung-Ching Hsieh; 張天定; 謝順景.
[[abstract]]The early studies of X-ray treatment in rice were mostly aimed to induce genic changes, while structural changes of the chromosomes were ‘rarely reported, though Ramiah and Parthasarathy (1935) found chromosome ring in X-rayed rice. Since Yamashita (1949) advocated that reciprocal translocations induced by X-rays were usable for linkage analysis, Nishimura (1950), Oka (1953) and Chang (1955) began to study this problem and some reciprocal translocation stocks were obtained. For the purpose of isolating reciprocal translocation lines for linkage group analysis, writers initiated an experiment to treat rice with X-rays in 1947 and again in 1954 and have obtained mutants such as semi-sterile rice, dwarf plants, chlorophyll deficiencies and others....
Palavras-chave: [[classification]]6.
Ano: 1957
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Nitrogen distribution and N2-fixing activity of developing soybean (Glycine max (L.) Merrill) Plants Taiwan Agricultural Research Institute
D.D. Huang; M.C.Shen; C.S. Chen; D.J. Liu; 黃定鼎; 沈美珍; 陳建山; 劉大江.
[[abstract]]Field experiments were conducted to investigate the distribution of N and the specific activity of N2-fixation of soybeans at successive stages of plant development. Nitrogen concentration in leaf blades was consistently higher than those in leaf petioles, stems and roots. Concentration in each plant part, except the seeds, usually decreased as the season progressed. However, N in leaf blades showed a sudden decline at V7 stage and an increase later at R2 stage. Pattern of changes in N in plant parts from different varieties usually was similar. During the pod-filling period (R4-R6), N was redistributed to seeds from vegetative tissues. Shih-Shih and Kaohsiung No. 3 maintained a higher level of N in leaf blades in this period as compared...
Palavras-chave: [[classification]]6.
Ano: 1980
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OED保鮮劑對於稻谷抑制發芽之研究 Taiwan Agricultural Research Institute
藍調; Tao Lan.
[[abstract]]本試驗為明嘹應用OED藥劑來處理濕稻谷,是否能抑制其發芽及其處理後,稻谷內成分變化情形,以減少本省南部第一期作,北部第二期作水稻,由於收穫期問逢下雨而遭發芽之損失,所用的稻谷為臺中在來1號(印度型)和臺南5號(日本型),以OED藥劑0%,0.5%,1.5%,2.5%濃度處理,其結果,如圖1~6及表1、2,茲將其摘要如下: 1. 以OED藥劑處理濕稻谷(含水量30%以上)的確有抑制發芽的效果,其最適濃度1.5%,2.0%。但對根之生長抑制更有效。 2. 經OED藥劑處理之稻谷,其成分變化情形,不很明顯,但是影響糙米率的大量減少,如蓬萊稻減少5~8%,在來稻減少11~27%,此點實值得注意。 Two varieties of rice Taichung native 1 (indica type) and Tainan 5 (japonica type) were treated with “OED” perservitive and its effects on germination, root growth and grain quality were studied. It was found that “OED” inhibited seed germination well at the concentration of 1.5 to 2.0 percent. The root growth was more severely affected by “OED” than germinability. Quality of rice in term of protein, starch and moisture contents were not affected,...
Palavras-chave: [[classification]]6.
Ano: 1970
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On the Medicinal Plants of Taiwan II. Preliminary Notes on the Original Plants of Chinese Crude Drug “Mai-Men-Tung” (麥門冬) Cultivated in Taiwan Taiwan Agricultural Research Institute
Tsu-Jen Hung; 洪祖仁.
[[abstract]]The original plants of Chinese crude drug “Mai-Men-Tung” cultivated in the Northern and Central part of Taiwan were subjected to identification. It was found that the broad leaved species cultivated in the Northern part of Taiwan was identified to belong to Liriope muscari BAILEY, and the narrow leaved species grown in the Central part of Taiwan belongs to L. angustissima OHWI. The specimen collected from the coastal area of the Northern Taiwan were assumed to belong to the narrow leaf strain of L. spicata LOUR. and its usefulness was evaluated. 中藥「麥門冬」又名「麥冬」係若干沿階草屬Genus Ophiopogon及麥門冬屬Genus Liriope植物之瘤狀根經乾燥製成者,具有鎮咳、袪痰、強心、強壯及利尿之效果。 著者在日本國立科學博物館大井次三郎博士之指導下,對臺灣北、中部栽培之「麥門冬」原植物及其近緣植物獲得若干心得。茲將扼要記述其內容以供有關人士參考。 一、臺灣北、中部栽培之「麥門冬」原植物有兩種。寬葉種係Liriope...
Palavras-chave: [[classification]]6.
Ano: 1970
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Opaque-2 及 floury-2 基因對玉米粒重之影響 Taiwan Agricultural Research Institute
萬雄; 王光; Hsiung Wan; Soh-Har Wong.
[[abstract]]玉米中opaque-2與floury-2兩個突變基因,使蛋白質中離膠酸與色膠酸的含量增加,因此,使其營養價值提高。目前玉米育種多以改良蛋白質的品質為主要目標。但在育種過程中發現這兩個突變基因,有減低產量的傾向。本研究乃以美國引進之opaque-2及floury-2原種,經三次回交於臺灣抗露菌病的15個自交系,再經自交分離選拔的o2與fl2系統為材料,探討o2與fl2基因對玉米粒重及產量的影響。 試驗共分為三部分:(1)opaque-2及floury-2基因對玉米自交系分離果穗上粒重的影響;(2)opaque-2基因對玉米單交果穗上粒重的影響;(3)opaque-2及floury-2自交系單交成績。所得結果如下: (一) Opaque-2玉米自交系分離果穗上不透明種子(胚乳因子型o2o2o2)的粒重比普通種子(O2--)平均減低8.65%。不同自交系間,同一自交系不同系統間及同一系統不同果穗間粒重減輕的變異很大,若干系統不透明種子和普通種子的粒重相似;若干系統則粒重減輕達25%之多。變異的情形,在早期自交系(BC2S1),自交系問均方比系統間為大,如回交及自交代數增加(BC3S2),則系統間的變異較自交系間的變異為大。 (二)...
Palavras-chave: [[classification]]6.
Ano: 1972
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Organ Regeneration from Anther Callus of Sweet Potato Taiwan Agricultural Research Institute
H.S. Tsay;P.C. Lai;L.J. Chen; 蔡新聲;賴本智;陳良築.
[[abstract]]Callus was induced from anthers of Ipomoea batatas Poir. by culturing on Murashige and Skoog basic medium supplemented with 2 mg/l each of 2,4-D, IAA and kinetin or 2 mg/l each of NAA and kinetin. Embryoids or shoots could be regenerated directly from ABA-containing medium. A large number of roots could be induced by subculturing these embryoids to 1/2 strength of MS medium with 0.1 mg/l NAA, 0.5 mg/l kinetin and 7.5 mg/l adenine sulfate, a few buds were observed from the nodule-like tissue of the growing root after 2-4 months in the same medium.
Palavras-chave: [[classification]]6.
Ano: 1982
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PC-SAS program for estimating Huhn's nonparametric stability statistics Taiwan Agricultural Research Institute
Lu, H. Y..
[[abstract]]A program written in the SAS language for personal computers to estimate Hühn's two nonparametric stability statistics is presented. Nonparametric methods proposed by Hühn in the 1970s are based on the ranks of genotypes in each environment and use the idea of homeostasis as a measure of stability. A stable genotype shows similar rankings across environments. Nonparametric stability statistics provide a viable alternative to existing parametric measures based on absolute data. They require no statistical assumptions about the distribution of the phenotypic values and are easy to use. Addition or deletion of one or a few observations is not as likely to cause great variation in the estimates as would be the case for parametric stability...
Palavras-chave: PC-SAS; [[classification]]6.
Ano: 1995
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PERFORMANCE OF GRANULAR HERBICIDES FOR TRANSPLANTED RICE Taiwan Agricultural Research Institute
W.L. Chang; 張萬來.
[[abstract]]The results of a herbicide experiment for transplanted rice conducted at the Chiayi Agricultural Experiment Station in the first crop of 1969 are briefly summarized. Nitrofen (G) +2,4-D IPE (G) gave the best control of weed followed by Nitralin (G) +2,4-D IPE (G). MCPA+HW, EPTC/MCPA (G) , and Trifluralin/MCPA (G) also provided good control of weeds. TCE-styrene and late application of 2,4-D or MCPA resulted in a poor control of weeds. A satisfactory control of weeds was also obtained by 2,4-D IPE (G) , TCE-styrene/2,4-D IPE (G) , and Propachlor/2,4-D IOE (G). Rice toxicity was generally light except the treatments of Nitrofen (G) + 2,4-D IPE (G) and 2,4-D amine salt, and mo t of rice injuries were recovered before panicle initia-tion stage....
Palavras-chave: [[classification]]6.
Ano: 1969
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Post-harvest Losses of Fruits and Vegetables in Zambia Taiwan Agricultural Research Institute
Adrian Phiri.
[[abstract]]In Zambia, fruits and vegetables play a major role in the diets of most low income households. They are also a good source of essential vitamins and minerals and indeed the source of livelihood. The production and processing of fruits are labour intensive and affected by the challenge of lack of adequate water supply. A lot of people are involved in the marketing and trading of fruits to earn income. Fruits, especially indigenous species are well adapted and can ensure household food security during periods of natural disasters such as droughts. However, the challenge is the high post-harvest losses incurred due to climatic conditions and handling of the produce before consumption. This paper gives an overview of the fruit and vegetables...
Palavras-chave: Technology on Reducing Post-harvest Losses and Maintaining Quality of Fruits and Vegetables: Proceedings of 2010 AARDO Workshop; [[classification]]6.
Ano: 2010
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Post-Harvest Profile in Sultanate of Oman Taiwan Agricultural Research Institute
Rashid AL-Shukili.
[[abstract]]To control the fruit and vegetables crops quality, knowledge and understanding of fruit and vegetables crops postharvest behavior and characteristics are necessary. Sultanate of Oman give considerable attention to the cultivation and development of fruit and vegetables crops. Ministry of Agriculture developing different research programs that aiming to improve productivity and quality of fruit and vegetable crops. The ministry of Agriculture also aimed to reach sustainable production of some important crops like date palm, banana and tomato. In addition, it contribute to the farmers by providing information knowledge of modern agriculture techniques and introducing high yielding varieties.
Palavras-chave: Technology on Reducing Post-harvest Losses and Maintaining Quality of Fruits and Vegetables: Proceedings of 2010 AARDO Workshop; [[classification]]6.
Ano: 2010
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REACTION OF RICE VARIETIES TO WINTER HARDINESS Taiwan Agricultural Research Institute
W.L. Chang; 張萬來.
[[abstract]]The reaction of rice varieties to winter hardiness was evaluated in the first crop of 1970 at the Chiayi Agricultural Experiment Station. The winter survival of young rice plants in the dry nursery indicated that japonica varieties were more resistant to winter injury than indica varieties. Varieties developed at or native of Taiwan showed better survival from winter killing than those from tropical regions of the United States, Philippines, and India. Visual estimates of chlorosis on rice seedlings in the ordinary wet nursery showed that varieties of poor winter survival generally developed severe chlorosis. Reaction of heterogenous populations were usually intermediate between those of the parents or components involved....
Palavras-chave: [[classification]]6.
Ano: 1970
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RELATIONSHIP BETWEEN SEEDLING LENGTH AND PLANT HEIGHT AND ITS IMPACT ON THE SELECTION OF SHORT PLANT IN RICE Taiwan Agricultural Research Institute
W. L. Chang; 張萬來.
[[abstract]]A total of 95 and 94 varieties of rice were randomly selected in the first and the second crops of 1969 respectively for the calculation of correlation coefficients between seedling length and plant height. Most correlations reached the significant level, although the magnitude of the correlations decreased with the development of rice plants. Rice seedlings of three F2 populations were visually classified into tall, intermediate, and short groups before transplanting to find out whether rice seedlings of different seedling length would result in matured plant with different plant height. It was found that tall seedlings generally produced tall plants whereas short plants developed from short seedlings. The differences in mean seedling length...
Palavras-chave: [[classification]]6.
Ano: 1970
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REPORT ON EXPERIMENTS ABOUT TIlE SEEDS’ SIZE OF KINMEN EARLY KOHLRABI Taiwan Agricultural Research Institute
P.N. Lee; 李伯年.
[[abstract]]1. Influenced by the factors such as the environment of seed-picking place, time of planting, fertilizing, management and the different part of picking, picked the seeds of same variety may inevitably have different size. 2 Kinmen Early kohlrabi cultivated at Kinmen did not grow well because of dry weather. The size of seeds had obvious difference. 3. The large size seeds have strong organism and promising development, they can be kept longer and still reserve life, medium and small size seeds have weak organism, they can lose their life very shortly in storage. 4. The size of seeds does not affect the yield. The medium and small size seeds can product more than the large size ones. But the germination of the former is not good, and their life...
Palavras-chave: [[classification]]6.
Ano: 1964
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Residues Control by Using Rapid Bioassay of Pesticide Residues (RBPR) for Market Inspection and Farm Education Taiwan Agricultural Research Institute
Ching-Hua Kao; Yu-Shih Hsieh; Ming-Yaw Chiang; Yu-Bing Huang.
[[abstract]]Following the execution of residue control program using housefly bioassay technique during 1964-1987, Taiwan Agricultural Research Institute has renovated and implemented a rapid bioassay method since 1985. The established rapid bioassay of pesticide residues (RBPR) system is aiming at detecting the noxious organ phosphorus, carbamate insecticides as well as ethylene bisdithiocarbamate fungicides using housefly acetylcholinesterase and Bacillus thuringiensis as the probes. Standard assay procedures have been developed to detect the residues on fruits, vegetables, rice, tea, spices, etc., and are able to complete 50 shipments within 4-6 hours. In Taiwan, more than 300 RBPR stations inspect a half million agricultural products annually, and have...
Palavras-chave: Technology on Reducing Post-harvest Losses and Maintaining Quality of Fruits and Vegetables: Proceedings of 2010 AARDO Workshop; [[classification]]6.
Ano: 2010
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RESPONSE OF RICE VARIETY TO PLANT SPACING AND NITROGEN FERTILIZATION Taiwan Agricultural Research Institute
W.L. Chang; 張萬來.
[[abstract]]The responses of two japonica rice varieties, Chianung 242 and Tainan 3, to four spac-ings and three levels of nitrogen were studied over a 3-year period from 1965 to 1967 at Tai-tou-ken Farm of the Chiayi Agricultural Experiment Station. Grain yields increased with the reduction of spacing and the increase of nitrogen which was more pronounced in the first crop of rice. The effects of plant spacings and nitrogen levels on grain yields were all significant at the 1% level of probability in both crops. Chianung 242 responded linearly and Tainan 3, curvilinearly to nitrogen in the first crop whereas in the second crop, both varieties showed linear response to nitrogen. The regression of grain yield to spacing was essentially linear in both crops...
Palavras-chave: [[classification]]6.
Ano: 1968
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Response of Two Maize Populations to Reciprocal Recurrent Selection in a High-yield Environment Taiwan Agricultural Research Institute
H.S. Lu; R.J. Lambert; 盧煌勝; R.J. Lambert.
[[abstract]]A selection program using reciprocal recurrent selection procedures in maize (Zea mays L.) was developed. Intra-and interpopulation selection procedures were used for two maize populations BS10 and RSSSC. Intrapopulation selection procedures included phenotypic mass selection for multiple leaf and multiple stalk-rot disease resistance and S1 family selection for grain yield in a high-yield environment. Interpopulation improvement involved selection of testcrosses of S1 family×inbred tester in a high-yield environment. Evaluations of populations per se, population crosses and populations×testers for response to three cycles of selection for grain yield were conducted at four environments. Evaluation of populations per se and population crosses...
Palavras-chave: [[classification]]6.
Ano: 1988
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Root Growth Chracteristics of Peanut Genotypes Taiwan Agricultural Research Institute
Ming-teh Huang; Darold L. Ketring; 黃明得; D.L. Ketring.
[[abstract]]To evaluate the potential of peanut root growth characteristics such as taproot growth rate at different periods of growth, taproot length, root number, root length density at different depths, and the relationship between taproot length and shoot dry weight were examined under greenhouse conditions during 1983 and 1984. Separate studies on root volume, root and shoot dry weights, root/shoot ratio, and their interrelationship were also conducted. Data obtained showed that peanut genotypes differed in taproot growth rate, root number, and length density in the first 30 cm of soil profile. However, perhaps due to the different times during the year when the tests were conducted, several characteristics such as root length density, number of roots...
Palavras-chave: [[classification]]6.
Ano: 1987
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