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Registros recuperados: 11
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Adaptability and Genotype x Environment Interaction of Spring Wheat Cultivars in Chile using Regression Analysis, AMMI, and SRAG Chilean J. Agric. Res.
Castillo,Dalma; Matus,Iván; del Pozo,Alejandro; Madariaga,Ricardo; Mellado,Mario.
Wheat (Triticum aestivum L.) genetic improvement objectives include obtaining cultivars capable of expressing their maximum potential yield and quality in diverse environments. This make necessary to know and define the environment in which a variety can express its maximum potential yield and quality. The objective of this study was to assess which method is the most efficient to study cultivars response in multiple environments. For this, we analyze the adaptability, stability, and genotype x environment (GxE) interaction effect, grain yield, sedimentation, and wet gluten content of 13 spring wheat cultivars sown in six environments in the central-south and southern zones of Chile during two seasons. The data were analyzed by regression analysis,...
Tipo: Journal article Palavras-chave: AMMI; SREG; GxE; Bread wheat.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200001
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Drought Tolerance in Recombinant Chromosome Substitution Lines (RCSLs) Derived from the Cross Hordeum vulgare subsp. spontaneum (Caesarea 26-24) × Hordeum. vulgare subsp. vulgare cv. Harrington Agricultura Técnica
Inostroza,Luis; del Pozo,Alejandro; Matus,Iván; Hayes,Patrick.
Grain yield (GY) and drought tolerance of recombinant chromosome substitution lines (RCSLs) derived from the cross between Hordeum vulgareL.subsp. spontaneum (K. Koch) Thell. and H. vulgare L. subsp. vulgare cv. Harrington, were studied in two contrasting environments, one with water stress (WWS) and the other with no water stress (NWS), during three growing seasons, 2004-2005, 2005-2006 and 2006-2007. In the first season 80 RCSLs were sowed and in the following a selection of 13 RCSLs. An a-lattice design was used in all the experiments. With the data of GY obtained in sites WWS and NWS it was calculated the drought sensitivity index (DSI). During 2004-2005 growing season GY varied greatly among locations, reflecting differences in water availability. The...
Tipo: Journal article Palavras-chave: Barley; Drought sensitivity index; Grain yield water stress; Genotype.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072007000300004
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Effect of soil depth and increasing fertilization rate on yield and its components of two durum wheat varieties Chilean J. Agric. Res.
Hirzel,Juan; Matus,Iván.
Agronomic practices, climatic variables, and soil conditions are key factors in crop productivity. Although the effects of soil chemical properties and water and agronomic crop management are known, there is little information about effective soil depth and its influence on crop productivity. Since most crop fertilization systems are based on the productive potential associated with climatic conditions and chemical properties of the first 20 cm of soil depth, the objective of this study was to determine the importance of effective depth in terms of increasing fertilization rates on durum wheat (Triticum turgidum L. var. durum) productivity. Two experiments were conducted in the 2006-2007 season in the Santa Rosa Experimental Station (71°54' S, 36°31' W,...
Tipo: Journal article Palavras-chave: Durum wheat; Soil depth; Fertilization; Triticum turgidum.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100008
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Effect of Split Nitrogen Applications on Durum Wheat Cultivars in Volcanic Soil Chilean J. Agric. Res.
Hirzel,Juan; Matus,Iván; Madariaga,Ricardo.
Durum wheat (Triticum turgidum L. var. durum) is an important crop for the world population and occupies a large cultivated area worldwide. New cultivars need constant improvement of their agronomic management, within which N fertilization is highlighted. Durum wheat is also important in Chile where genetic breeding and agronomic management have been developed to increase yield, industrial, and nutritional grain quality. The objective of this experiment was to determine the appropriate number of N applications during a crop cycle in a volcanic ash soil in South Central Chile. Nitrogen split applications were carried out on three durum wheat cultivars in a Melanoxerands soil during the 2003-2004 and 2004-2005 seasons. A rate of 200 kg ha-1 N was applied at...
Tipo: Journal article Palavras-chave: Durum wheat; Cultivars; Nitrogen; Split applications; Volcanic soil.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400009
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Faraón-INIA, a new Winter Triticale (×Triticosecale Wittmack) for Southern Chile Chilean J. Agric. Res.
Jobet,Claudio; Matus,Iván; Campillo,Ricardo; Romero,Oriela; Madariaga,Ricardo; Alfaro,Cristian.
Faraón-INIA is a new winter triticale (×Triticosecale Wittmack) cultivar released by the National Wheat Program of the Instituto de Investigaciones Agropecuarias INIA in Chile. It is derived from an F9 material received from Nordsaat, Germany, under a germplasm exchange agreement signed in 2006 by both institutions. The crossing was Piano/Focus with Nord93.7548 pedigree. Faraón-INIA has a winter growth habit, a short stem (semi-dwarf), with a mean height of 106 cm. The spike is long, compact, decumbent, white, and awned. The grain is soft, yellow, with 1000-grain weight of 36 g, and a mean of hectoliter weight of 76 kg hL-1. It is resistant to stripe rust (Puccinia striiformis West. f. sp. tritici) and leaf rust (Puccinia triticina Erikss.) as well as...
Tipo: Journal article Palavras-chave: Winter triticale; High-yielding cultivar; Quality.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400019
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Genetic Progress in Winter Wheat Cultivars released in Chile from 1920 to 2000 Chilean J. Agric. Res.
Matus,Iván; Mellado,Mario; Pinares,Marcos; Madariaga,Ricardo; del Pozo,Alejandro.
Wheat (Triticum aestivum L.) is the major crop in terms of planted area and presents the largest distribution in the country covering a wide range of climatic regions. This study assesses the changes of various agronomic traits of winter wheat cultivars released in Chile between 1920 and 2000. A total of 117 winter accessions, representing 45 old and 72 modern cultivars were tested in a humid Mediterranean-type climate, with irrigation, in 2003. Old cultivars were those released before 1960 and modern ones were those released after 1960. Principal component (PC) analysis using 10 agronomic traits clearly separate modern from old cultivars of winter wheat. Comparing modern cultivars with old ones, plant height have been reduced by 25.6%, but others traits...
Tipo: Journal article Palavras-chave: Genetic improvement; Grain quality; Mediterranean environment; Old and new cultivars; Principal components; Yield progress.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300001
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Genotype × Environment Interaction in Canola (Brassica napus L.) Seed Yield in Chile Chilean J. Agric. Res.
Escobar,Magaly; Berti,Marisol; Matus,Iván; Tapia,Maritza; Johnson,Burton.
Genotype x environment (G × E) interaction in canola (Brassica napus L.) cultivar seed yield is unknown in Chile. The interaction was performed with the SREG (Sites Regression) model. Two experiments were conducted in five and thirteen environments in the 2008-2009 season in Central South Chile. The experimental design was a randomized complete block (RCBD) in each environment with four replicates and 26 open-pollinated or hybrid canola genotypes in Experiment 1, and RCBD with three replicates and 17 genotypes in Experiment 2. ANOVA was used to determine the significance of the G × E interaction. biplots were used to graphically interpret and determine the best cultivar in each environment and the corresponding mega-environments. The G × E interaction was...
Tipo: Journal article Palavras-chave: SREG; GGE; MET; Interaction; Biomass.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200001
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Kipa-INIA, new high yield spring bread wheat variety for Chile Chilean J. Agric. Res.
Matus,Iván; Madariaga,Ricardo; Jobet,Claudio; Zúñiga,Javier; Alfaro,Christian.
Kipa-INIA is a spring wheat variety (Triticum aestivum L.) originated from a cross carried out in the Wheat Plant Breeding Project of the Instituto de Investigaciones Agropecuarias (INIA), in the Centro Regional de Investigación Quilamapu (36°31’ S; 71°54’ W) in 1993. It has an upright growth habit in the seedling stage. The adult plant is low to medium height and varies between 90 and 95 cm. The spike is white with long awns along its full length. The grain is ovate, white, and vitreous. It was sown in mid-August in the Santa Rosa Experimental Field, Chillán, head emergence occurred 90 to 95 d after sowing, i.e. is 4 to 6 d before ‘Domo-INIA’. On the mean, ‘Kipa-INIA’ sown under irrigation conditions reached a yield of 11.7% higher than the control var....
Tipo: Journal article Palavras-chave: Spring wheat; New cultivar; Kipa-INIA.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200018
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Lleuque-INIA, New High Yield Spring Durum Wheat Variety for Chile Chilean J. Agric. Res.
Matus,Iván; Madariaga,Ricardo; Alfaro,Christian; Jobet,Claudio.
The Lleuque-INIA spring durum wheat variety (Triticum turgidum var. durum L.) originated from a cross carried out by the Instituto de Investigaciones Agropecuarias (INIA), National Wheat Program, in the Centro Regional de Investigación La Platina, Santiago, Chile, in 1993. This variety has an upright growth habit in the seedling stage; the adult plant is of medium height and varies between 80 and 90 cm. The spike is medium-sized, white, and exhibits long whitish awns along its full length. The grain is large-sized, elongated, golden yellow, and vitreous. The variety was sown in mid-August in the Santa Rosa Experimental Station (36°31’ S; 71°54’ W), Chillán, head emergence occurred between 89 and 91 d after sowing, and was 6 to 8 d later than ‘Llareta-INIA’...
Tipo: Journal article Palavras-chave: Durum wheat; Lleuque-INIA.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200020
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Millán-INIA, New Variety of High Quality Early Spring Bread Wheat for Irrigated Soils in Central-Southern Chile Chilean J. Agric. Res.
Matus,Iván; Madariaga,Ricardo; Jobet,Claudio; Zúñiga,Javier; Alfaro,Christian.
Millán-INIA is a variety of spring bread wheat (Triticum aestivum L.) originating from a cross carried out in the Wheat Plant Breeding Project of the Instituto de Investigaciones Agropecuarias (INIA), in the Centro Regional de Investigación Quilamapu in 1995. This is a spring wheat variety with an early to medium-early head emergence and upright growth habit in the seedling stage. The adult plant is low to medium height and varies between 75 and 90 cm, with a mean of 85 cm. The spike is white with long awns along its full length. The grain is large-sized, white, and vitreous. The weight of 1000 grains varies between 50 and 59 g. It was sown in mid-August at the Santa Rosa Experimental Station (36°31’ S; 71°54’ W), Chillán. Head emergence occurred 88 to 89...
Tipo: Journal article Palavras-chave: Spring wheat; New variety; Millán-INIA.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200019
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Seedling vigor variation among 80 recombinant chromosome substitution lines (RCSL) of barley (Hordeum vulgare) Ciencia e Investigación Agraria
Inostroza,Luis; Quezada,Celerino; Inostroza,Wladimir; Matus,Iván; Tapia,Maritza; del Pozo,Alejandro.
The seedling vigor of 80 barley recombinant chromosome substitution lines (RCSLs) was measured for selecting high seedling vigor genotypes. The RCSLs were derived from a cross between H. vulgare subsp. spontaneum and H. vulgare subsp. vulgare 'Harrington'. The work was carried out under greenhouse conditions during the summer of 2008. The experimental design was an alpha lattice with 3 replicates. In each replicate, 40 plants were established, distributed in eight polyethylene pots containing sand as substrate, which were fertilized an irrigated. The emergence of seedlings, number of leaves and shoots, dry matter of leaves, shoots and roots and leaf area of fully expanded leaves were measured. In addition, growth indices were calculated: emergence rate,...
Tipo: Journal article Palavras-chave: Plant growth analysis; Relative growth rate; Net assimilation rate; Allometric coefficient.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100013
Registros recuperados: 11
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