摘要
以不同抗旱性玉米品种为试材 ,在不同强度水分胁迫下 ,玉米穗粒数的减少是抽雄开花期产量降低的主要限制因子 ,而秃尖增长和行粒数减少是穗粒数降低的主要因素 ,说明干旱导致雌穗发育受阻 ,花期不遇 ,籽粒败育率增加。
A study on maize kernel yield and ear characteristics under diverse water stress was dealt with different drought resistant maize cultivars. The declination in the kernels yield under water stress at tasselling stage was mainly resulted in the reduction of kernel numbers per ear which increase of bald tip and reduction of grain numbers per row caused. It showed that drought resulted in unencountering of flowering phase and increase of abortive kernels. The drought resistant cultivar can maintain higher yield.
出处
《辽宁农业科学》
2002年第6期5-7,共3页
Liaoning Agricultural Sciences
基金
国家农业部重点课题 (95 170 10 2 )
关键词
抽雄期
水分胁迫
玉米
籽粒产量
果穗性状
maize
water stress
tasselling stage
kernel yield
ear characteristics
