几个杂交早稻品种的产量及光合特性比较  

Comparison on Yield and Photosynthetic Characters among Several Early Hybrid Rice Varieties

作　　者：周娟[1,2] 陈平平[1] 李志斌[1] 易镇邪[1] 屠乃美[1] 

机构地区：[1]湖南农业大学农学院/南方粮油作物协同创新中心,长沙410128 [2]常德市农业科学研究所,湖南常德415000

出　　处：《作物研究》2015年第5期468-471,481,共5页Crop Research

基　　金：国家自然科学基金(31171494);国家科技支撑计划(2011BAD16B01;2012BAD04B10-01;2013BAD07B11-02)

摘　　要：为筛选适宜在长沙地区推广种植的杂交早稻品种,以常规早稻品种湘早籼45号为对照,比较了陵两优104、陆两优611、T优705、陵两优396、陆两优211等杂交早稻品种的产量及其光合特性。结果表明:各品种产量差异显著,除陆两优211外,其他杂交早稻品种产量均高于对照,T优705和陵两优396产量较高,达7.1 t/hm2左右,显著高于对照;品种间产量构成因素、叶面积指数及光合特性指标差异显著。相关分析表明,有效穗数与产量呈显著正相关,其他因素与产量相关性不大;叶面积指数、净光合速率与产量相关性不大;产量与孕穗期叶绿素含量呈显著正相关,与齐穗期、灌浆期叶绿素含量呈负相关。可见,早稻产量高低是多因素综合作用的结果,本试验条件下T优705和陵两优396是6个品种中最适合在长沙地区种植的杂交早稻品种。In order to screen out optimal early hybrid rice varieties suitable for planting in Changsha region,yield and pho-tosynthetic characters of 5 early hybrid rice varieties,Lingliangyou 104,Luliangyou 611,T you705,Lingliangyou 396 and Luliangyou 211,were compared with conventional early rice variety Xiangzaoxian No. 45 as control. The results showed that there existed significant difference in yield among 6 varieties,and yield of early hybrid rice varieties was higher than that of control except for Luliangyou 211,and the yield of T you 705 and Lingliangyou 396 was higher,about 7. 1t/hm2,which was significantly higher than that of control. There existed significant differences in yield components,leaf area index and photo-synthetic indexes among 6 varieties. There existed significant positive correlation between effective panicle and yield,while the correlation between others yield components and yield was not significant. Correlation between yield and leaf area in-dex,net photosynthetic rate was not significant. There existed significant positive correlation between yield and chlorophyll content in booting stage,and there existed negative correlation between yield and chlorophyll content in heading stage and filling stage. The results indicated that yield of early rice was jointly decided by many factors. Considering from yield of 6 varieties,T you 705 and Lingliangyou 396 were the optimal varieties suitable for planting in Changsha region.

关 键 词：早稻 品种 产量 光合特性 长沙地区 

分 类 号：S511.037[农业科学—作物学]