Data/hora: 07/06/2024 08:47:34

Provedor de dados: | 65
País: | Brazil
Título: | Agronomic performance of male-sterile and fertile maize genotypes at two plant populations
Autores: | Sangoi,Luís; Salvador,Ricardo.
Data: | 1996-12-01
Ano: | 1996
Palavras-chave: | Zea mays; Male-sterility; Stress; Gram yield.
Resumo: | This experiment was conducted in 1994 at Ames, Iowa, US to test whether cytoplasmic male-sterility can be used to decrease barrenness and to increase grain yield of maize at two plant populations. Four genotypes were tested: a hybrid (NK 6330) and an inbred, wifh sterile and fertile counterparts. Each genotype owas evaluated at plant populations equivalent to 25,000 and 75,000 pl. ha-1. Hybrids produced higher grain yield than inbreds at both plant populations. Gram yield was higher at 75,000 than at 25,000 pl. ha-1. No difference in gram yield, number of ears per plant, number of grains per ear, tassel length, and tassel number of branches was found between sterile and fertile counterparts of the inbred and hybrid, regardiess of plant population. Fertile genotypes bore heavier tassels at anthesis than their sterile counterparts. Adequate precipitation distribution and high fertility level in the soil probably decreased competition between tassel and ears, mitigating potential yield benefits of suppressing genetically pollen production.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781996000300006
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84781996000300006
Formato: | text/html
Fonte: | Ciência Rural  v.26 n.3 1996
Fonte: | info:eu-repo/semantics/openAccess