摘要
早衰小麦功能叶片从开花后自叶尖开始失绿坏死,缩短了后期功能叶片的光合时间,降低了光合效率,严重影响其子粒产量。以从小偃54×8602的F8高代品系中分离出的早衰和正常小麦近等基因系为试验材料,研究了二者的主要农艺性状差异及生育后期的光合作用,结果表明:早衰小麦的光合能力与同化产物的积累均比正常小麦低。研究早衰小麦的生理生化和遗传基础,对于理解小麦早衰成因、选育高产小麦品种具有重要的理论和实践意义。
The functional leaves of early aging wheat begin losing green from the tip since flowering. It significantly shortened the photosynthetic time of function leaves, reduced the photosynthetic efficiency, and seriously affected final grain yield. In this experiment, the test materials were wheat near-isogenic lines and the normal strains, which separated from Fs in Xiaoyan 54 x 8602. The differences of main agronomic traits and photosynthesis at late growth stage between near-isogenic lines and normal strains were studied. The results showed that early aging wheat＇ s pho- tosynthetic capacity and the accumulation of assimilates were lower than normal wheat. The study on physiology, bio- chemistry and genetic basis of early aging wheat have an important theoretical and practical significance to under- stand the causes of premature, and to breed high yield wheat varieties.
出处
《作物杂志》
CAS
CSCD
北大核心
2014年第1期19-23,共5页
Crops
基金
粮食丰产科技工程(2011BAD16B09)
国家自然科学基金项目(30800683)
关键词
小麦
近等基因系
早衰
农艺性状
光合特性
Wheat
Near-isogenic lines
Early aging
Agronomic traits
Photosynthetic characteristics
