摘要
研究了e 杂交稻的株形、产量构成、茎秆抗倒性 ,并分析了e 杂交稻的稻米品质。结果表明 ,与原杂交稻相比 ,e 杂交稻具有与原杂交稻相似的株叶形态和生育期外 ;植株生长较繁茂 ,各个生育期的植株高度略有增加 ,但分蘖数略有降低 ;构成产量因素中的有效穗、结实率和穗粒数略有降低 ,但千粒重增加 ,保持原杂交稻的产量水平。茎秆的倒伏指数略有增加。稻米米粒变长、变宽 ,长宽比增加 ,稻米的外观品质有所改良。统计分析表明 ,所研究的e 杂交稻各性状与原杂交稻性状间的差异都达不到显著水准。本文还就eui种质的育种应用作了进一步讨论。
Plant type, yield components, lodging resistance as well as grain quality of eui -hybrid rices were investigated. The results indicated that the plant type and growth duration of eui -hybrids was closed to original hybrids compared with the original non- eui -hybrids. The eui -hybrids showed a little bit increased heterosis in plant height, and a little bit decreased in tillers. For yield components, the eui -hybrids had less productive panicle, seed setting, grain number, but more grain weight and yield level same as original hybrids. Its grain was longer, wider and the L/W ratio was increasing. The lodging index of it increased a little. Statistical results showed there was no significant difference in the agronomic traits investigated between the eui -hybrid and the original hybrid. The utilization of the eui -stock in hybrid rice breeding was also discussed in this paper.
出处
《作物学报》
CAS
CSCD
北大核心
2003年第6期919-924,共6页
Acta Agronomica Sinica
基金
国家自然科学基金 (3 0 0 70 470 )
关键词
E-杂交稻
生物学特性
株形
产量构成
茎秆抗倒性
eui-hybrid rice
Plant type
Yield components
Lodging resistance
Grain quality
