摘要
用木村Ｂ营养液水培威优３５、威优４９和常规稻湘矮早９号，测定叶片和根系ＳＯＤ活性，可溶性蛋白质含量及叶片叶绿素含量的动态变化。结果表明：叶片ＳＯＤ活性、可溶性蛋白质含量分别在雌雄蕊原基形成期和抽穗期出现峰值，而根系ＳＯＤ活性分别在二次枝粳原基分化期、孕穗后期和乳熟期出现峰值。叶片ＳＯＤ活性，可溶性蛋白质含量、叶绿素含量的降解速率，从抽穗至乳熟期杂交稻大于常规稻，并与空秕率成显著正相关；而从乳熟期至完熟期，则常规稻大于杂交稻，并与粒重成极显著负相关。
V35,V49 and Xiang 9 were. cultured in Kimura solution,B to determine the SOD activity.water solub le protein content in both the leaves and the roots as well as the chlorophyll content in leaves .The results showed that with all three types of rice,SOD activity in the roots and leaves did not correspond .throughout the entire period of growth and development .Two. peaks of SOD activity occurred in leaves while three peaks of SOD activity emetged in roots.The decreasing percentage of SOD activity in roots was earlier than in leaves in all three thpes of rice, the decreasing percentage of SOD activity: in roots and leaves was positively correlated.significantly or very, significantly The reduction of the SOD activity, the content of Water soluble protein and chlorophyll in leaves of V35 and V49 was more than that of Xiang 9 and was positively correlated with the ratio. of empty and abortive grains significantly from the heading stage to the milk-ripeing.stage,However, the reduction of the above. indexes of Xiang 9 was more than that of V35 and V49 after the milk-ripening stage,Thus the period from the heading stage to the milk-ripening stage was the determinative period to the ratio of empty and abortive grains of hybrid rice.
出处
《杂交水稻》
CSCD
北大核心
1992年第6期36-39,共4页
Hybrid Rice
