【摘要】 运用因子分析法对不同生境下62个水稻品种中13个稻米品质性状研究结果表明,以前5个主因子对变异的累计贡献率>89％统计,垩白(垩白粒率和垩白度)、加工品质(糙米率、精米率、整精米率和碎米率)、粒形(糙米宽厚比、糙米长宽比)是影响早季稻米品质主要因素;糙米宽、整精米率、精米率、糙米长和直链淀粉含量是影响晚季稻米品质的主要因素。主因子之间早季垩白与碎米率、糙米宽厚比和糙米长宽比、碎米率与糙米宽厚比表现正向相关,晚季糙米宽与精米率和直链淀粉含量、精米率与糙米长和直链淀粉含量、糙米长与直链淀粉含量表现正向相关。主因子之间早季垩白与糙米率、精米率和整精米率,糙米率、精米率、整精米率与碎米率、糙米宽厚比和糙米长宽比,碎米率与糙米长宽比,糙米宽厚比与糙米长宽比表现负相关,晚季糙米宽与整精米率、精米率、糙米长和直链淀粉含量,整精米率与糙米长,精米率与直链淀粉含量表现负相关。更多还原

【Abstract】 Factor analysis method was applied to study 13 rice quality traits of 62 rice varieties under different environments.The results show that the cumulative contributions made by the former 5 main factors for variation are above 89.0%.In early season,chalky grain rate (CGR),chalkiness (CH),brown rice rate (BRR),milled rice rate (MRR),head rice rate (HRR),broken rice rate,ratio of brown rice width to thickness (WTR) and ratio of brown rice length to width (LWR) are the main factors,which affect the rice quality,while in late season brown rice width (BRW),head rice rate (HRR),milled rice rate (MRR),brown rice length (BRL) and amylose content (AC) are the main factors,which affect the rice quality.There is a positive correlation between main factors,such as chalk and broken rice rate,WTR and LWR,BRR and WTR in early season.There exists a positive correlation between main factors,such as BRW,MRR and AC,MRR,BRL and AC in late season,while there is a negative correlation between main factors,such as chalk and BRR,MRR and HRR,BRR,MRR,HRR and BRR,WTR and LWR,BRR and LWR,WTR and LWR in early season.There exists a negative correlation between main factors,such as BRW and HRR,MRR,BRL and AC,HRR and BRL,MRR and AC in late season.更多还原