期刊论文

Heterosis Analysis of Photosynthetic Characteristics in Indica Hybrid Rice

中文

华北农学报

Acta Agriculturae Boreali-Sinica

1000-7091

2014

26

3

122-127

湖南农业大学作物学开放基金项目(ZWKF201310)； 国家“863”计划资助项目(2010AA101304)；

本校为第一机构

采用不完全双列杂交(NCⅡ)设计,以11个水稻不育系和4个恢复系杂交配组,对F_1组合单株产量进行了配合力分析和竞争优势聚类分析。结果表明,单株产量受基因型加性遗传的作用较大(56.04 %),产量优势由全部基因型方差引起的h_B~2占95.65 %。恢复系对于杂种产量的影响较大(GCA=56.05 %)且受栽培条件等环境的影响较小(4.3 %)。有2个恢复系和4个不育系一般配合力效应较大,由高到低的顺序是:云R3>云R4>沪旱11A>云2A>云3A>云1A。以云3A和沪旱11A与云R3配制的组合单株产量均大于36.8 g(10 400 kg/hm~2),竞争优势值均大于20.7 %,株型好,分蘖力强,结实率高,抗病性强,具有较大的生产利用潜力。

To verify the heterosis of photosynthetic characteristics of flag leaves,thirty hybrid rice combinations and their parents＇ were tested.The result were as follows,there were significant differences（ P〈 0.01） for the photosynthetic characteristics in both the hybrid rice combinations and their parents.Among those parameters,photosynthetic rate had the biggest coefficient of variation in parents but stomatal conductance had the biggest in hybird rice cornbinations.And the rate of chlorophyll content（ a） and chlorophyll（ b） had the smalles...