Main stem and tiller contribution to wheat cultivars yield under different irrigation regimes
Main stem and tiller contribution to wheat cultivars yield under different irrigation regimes
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DOI：
10.1590/s1516-89132001000400001
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发表时间：
2001-01-01
影响因子：
1
通讯作者：
de Almeida, JCV
中科院分区：
文献类型：
--
作者：
Destro, D;Miglioranza, E;de Almeida, JCV
本研究以两个小麦品种（Triticum aestivum L.）为材料，Cocoraque和BH-1146，在两种水处理下：a）正常田间条件，和; B）灌溉，在隆德里纳，PR，巴西。试验采用随机完全区组设计，处理采用裂区布置，重复8次。收集了总产量、主茎产量、分蘖产量、分蘖占总产量的比例、产量构成因素等17个性状的数据。在正常田间条件下，栽培品种BH-1146相对于Cocoraque具有更高的总谷粒产量;即，更广泛的水压力。主茎籽粒产量对灌水量的响应呈显著正相关，是两品种增产的主要原因。分蘖粒产量对总产量的贡献很小。
The present study was carried out to determine the contribution of main stems and tillers to the total yield of two wheat cultivars (Triticum aestivum L.), Cocoraque and BH-1146, under two water treatments: a) normal field conditions, and; b) irrigation, in Londrina, PR, Brazil. The experiment was an eight replication randomized complete block design with treatments arranged in split-plots. Data on total grain yield, main stem grain yield, tillers grain yield, the ratio between tiller and total grain yield, yield components and other 17 traits were collected. The cultivar BH-1146 had a higher total grain yield in relation to Cocoraque under normal field conditions; i.e., wider water stress. Main stem grain yield responded positively and significantly to irrigation which was the main cause of increased Yield in both cultivars. The tiller grain yield contributed little to the total yield.