华南早籼超级稻成熟期生理特性研究  

The physiological characteristics of South China super rice for early-cropping indica at mature stage

作　　者：陈友订[1] 万邦惠[2] 张旭[1] 

机构地区：[1]广东省农业科学院水稻研究所,广州510640 [2]华南农业大学农学院

出　　处：《广西农业科学》2004年第5期359-361,共3页Guangxi Agricultural Sciences

基　　金：国家"8 6 3"项目子专题 (2 0 0 1AA2 11191) ;广东省科技创新百项工程 (2 KB6 4 80 4 N) ;广东省自然科学基金(990 5 0 1)资助

摘　　要：20 0 2年早季 ,对华南超级常规稻品种广超 3号和胜泰 1号、两系超级杂交稻组合培杂 6 7和粤杂 12 2、三系超级杂交稻组合丰优 4 2 8和泗优 998等 6个材料成熟期的产量、干物质、剑叶叶绿素 (a+b)含量、叶面积指数、根系活力和功能叶净光合速率进行了测定 ,并分析了品种 (组合 )间差异。提出了本区早籼超级稻株型育种中成熟期宜掌握的生理指标量值为 :干物质量 184 4 1kg/hm2 ,剑叶叶绿素 (a+b)含量 4 .5 mg/g FW;根系活力 139μg NA/g FW· h;L AI6 .4 ;剑叶净光合速率 10 .7μmol CO2 /m2 · s左右。In the spring of 2002, the main physiological characteristics (including the yield and dry matter weight, and the chlorophyll contents (a + b), leaf area index [LAI], root activity and net photosynthetic rate in the flag leaves were measured in the mature stage of Guangchao 3 and Shengtai 1, conventional super rice varieties of South China, two-line super hybrid rice Yueza 67 and 122, and three-line super hybrid rice Fengyou 428 and Siyou 998. The difference between varieties (combinations) was analyzed. The required physiological values in the mature stage for the plant type breeding of double cropping super rice in South China were suggested as follows: 18441 kg/hm 2dry matter weight; 4.5 mg/g FW chlorophyll contents (a + b) 139 μgNA/g FW·h root activity, 6.4 leaf area index and about 10.7 μmol CO 2/M 2·s net photosynthetic rate in the flag leaves.

关 键 词：超级稻 成熟期 生理性状 

分 类 号：S511.21[农业科学—作物学]