摘要
以湖北省种植的１１个大、中、小粒品种（系）为试验材料，用Ｌｏｇｉｓｔｉｃ方程对不同小麦品种的籽粒灌浆过程进行了拟合；用ｔ测验分析了３组不同粒重品种灌浆参数差异；用相关分析和逐步回归分析研究了灌浆参数与粒重的关系。结果表明，在灌浆各阶段，不同品种类型的部分灌浆参数间有显著或极显著差异。灌浆持续期Ｔ、平均灌浆速率Ｒ、快增期灌浆速率Ｒ２和时间Ｔ２、缓增期灌浆速率Ｒ３和时间Ｔ３对粒重作用显著。除此之外，各阶段灌浆速率和时间之间有极显著负相关。可通过选育高平均灌浆速率、高快增期灌浆速率的品种；通过栽培措施协调灌浆速率与持续时间的矛盾，增加缓增期灌浆速率和延长缓增期时间而提高粒重。
The grain filling processes of eleven wheat varieties
with different kernel weight planted in Hubei Province were modeled with Logistic equation. The
difference of grain filling parameters among three groups of varieties with different kernel
weight was analysed using tTest, and the relationship between grain filling parameters and
grain weights was analysed using correlation and stepwise regression. Results showed that at
each stage of grain filling processes, the differences of some of the grain filling parameters
among varieties were significant or extremely significant. Grain filling duration(T) and rate(R),
grain filling (T\-2) and rate (R\-2) in fast increasing period, grain filling duration (T\-3) and (R\-3) in
slightly increasing period significantly affected grain weight. In addition, there was a
significantly negative correlation between the grain filling rate and the grain filling duration at
each stage. Breeding of new varieties with high average grain filling rate and high R\-2,
coordination grain filling rate and duration at each stage, and increasing grain filling rate R\-3)
and duration T\-3 by cultural techniques could increase kernel weight.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1999年第2期107-110,共4页
Journal of Huazhong Agricultural University
基金
华中农业大学作物遗传改良国家重点实验室资助
关键词
小麦
籽粒灌浆
粒重
wheat(Triticum aestivum), grain filling, grain weight
