期刊论文

Effects of summer-sowing short-season-cultivation on spatial-temporal characteristics of boll-formation and yield composition of cotton

中文

湖南农业大学学报(自然科学版)

1007-1032

2024

50

1

15-22

10.13331/j.cnki.jhau.2024.01.003

:湖南省棉花产业技术体系栽培与良种繁育岗位专家项目 :湖南省农业专项

本校为第一机构

以 10 个不同基因型棉花品系为试验材料,采用株式图记载棉株各部位蕾铃发生、生长和脱落情况,以探明棉花在夏播短季栽培条件下的棉铃形成时空分布特征.结果表明:在时间分布上,现蕾高峰期为播种后第 56天至第 80天,开花高峰期为播种后第 77天至第 96天,成铃高峰期为播种后第 85天至第 101 天,各品系生殖器官(蕾、花、铃)数量积累均有显著差异;在空间分布上,P56-3、07 单 12、07 单 6 和 07 单 7 表现为中部成铃最多,其余品系则表现为下部成铃最多;P56-3、07单 6和 07单 7成铃率分布表现"下部果枝内空形";各品系产量结构有显著差异,品系 2003-29 单株铃数较其他品系高 19.53%～119.55%,籽棉和皮棉...

In order to understand the spatial-temporal distribution characteristics of cotton boll-formation under summer-sowing short-season-cultivation conditions,10 cotton lines of different genotypes were used as experimental materials,and the occurrence of bud bolls in each part of cotton plants was recorded by plant diagrams.The results showed that in terms of time distribution,the peak period of buds was 56-80 days after seeding,the peak period of flowering was 77-96 days after seeding,and the peak period of boll-formation was 85-101 days after sowing,and the accumulation of reproductive organs(bu...