地方品种大粒王粒型及产量构成性状在F_2的表现  

The Grain Type and Yield Performance of Cultivar Daliwang in F_2 Population

作　　者：姜敬伟[1] 余显权[2] 王如琼[3] 齐明[3] 

机构地区：[1]贵州大学生命科学学院,贵州贵阳550025 [2]贵州大学教学实验场,贵州贵阳550025 [3]贵州大学农学院,贵州贵阳550025

出　　处：《山地农业生物学报》2013年第2期181-183,共3页Journal of Mountain Agriculture and Biology

基　　金：贵州省科技厅科技支撑计划[黔科合NZ字(2011)3003号]

摘　　要：对水稻地方品种大粒王与中小粒品种鄂晚10号杂交F2的199个单株进行了籽粒及其相关性状的考察,同时进行了相关性及通径分析。结果表明:有效穗数与单株产量呈极显著的正相关,千粒重、粒长、粒宽对结实率呈极显著负相关,粒长、粒宽对千粒重呈极显著正相关,粒长、粒宽和千粒重与结实率呈极显著负相关。通径分析表明有效穗数对单株产量的直接作用最大,粒长对长宽比的直接作用最大。The grain and other characteristics of 199 plants from F2 generation of cuhivar Daliwang X Ewan-10 were investigated using correlation and path analysis in the current work. The results showed that the effective panicle number had a significantly positive correlation with yield per plant. The 1000-grain weight, grain length and grain width were significantly negatively correlated to seedsetting rate. The grain length and grain width demonstrated a positive correlation with 1000-grain weight. The effective panicle number gave the high-est contribution to yield per plant. Grain length had an important contribution to length-width ratio. The path analysis showed that the effective panicle Grain length were significantly positively number had a significantly positive correlated to length-width ratio. correlation with yield per plant.

关 键 词：水稻 相关分析 通径分析 

分 类 号：S334[农业科学—作物遗传育种]