摘要
测定了籼粳稻亚种间重穗型组合Ⅱ优６０７８和对照汕优６３生育后期剑叶中叶绿素含量与净光合速率（Ｐｎ）、超氧化物歧化酶（ＳＯＤ）与过氧化物酶（ＰＯＤ）活性、可溶性蛋白质含量与硝酸还原酶（ＮＲ）活性、内源激素（ＺＴ、ＧＡ３、ＩＺＺ）含量。结果表明，Ⅱ优６０７８生育后期叶绿素含量高，光合能力强，且叶片衰老缓慢，内源激素含量高，是Ⅱ优６０７８获得高产的重要原因。
The chlorophyll content, net photosynthetic rate (Pn), superoxide dismutase (SOD) activity, peroxidase (POD) activity, soluble protein content, nitrate reductase (NR) activity and contents of endogenous plant hormones (ZT, GA3, IZZ) were tested in the flag leaves of You 6078, a heavypanicle type intersubspecific hybrid rice, and the check Shanyou 63 in full heading and grain filling stages. The results showed that You 6078 had higher contents of chlorophyll and endogenous plant hormones, a higher photosynthetic intensity and NR activity, and a slower decreasing rate in SOD and POD activity and soluble protein content in the late stage, which is the important reason for You 6078 yielding higher than Shanyou 63.
出处
《杂交水稻》
CSCD
北大核心
1999年第4期39-40,共2页
Hybrid Rice
关键词
重穗型
杂交稻
Ⅱ优6078
生育后期
生理特性
You 6078
heavypanicle hybrid rice
late growth stage
physiological characteristics
