摘要
测定武昌夏季和广西秋季栽培的杂交早稻新组合威优242F_1、F_2,汕优242F_1、F_2,威20B,珍汕97B和湖大242的糙米率、精米率、米粒长、米粒宽、粒形(长/宽)、垩白等级和碱消值。分析以上性状的F_2变异,估算垩白等级和碱消值的广义遗传力分别为52.26％和80.40％。同时研究了异地不同季别栽培条件对米质性状的影响。
Two new hybrid combinations of early rice Wei-You 242 F1 F2 and Shan-You 242 F1 F2,V20B,Zhen-Shan 97B and Hu-Da 242 were planted during summer in Wuchang and during autumn in Guangxi separately. The percentage of brown rice,milled rice recovery,length,width,shape (length/width) ,chalkness score and alkali spreading value of grains were measured. The F2 variation of the above characters was studied. The heritability (hb2) of chalkness score was estimated at 52. 25% and the hb2 of alkali spreading value was 80. 40%. Besides,the comprison of grain characters between summer-planted rice and autumn-planted rice demonstrated the effects of different planting conditions on rice grain Quality .
出处
《湖北大学学报（自然科学版）》
CAS
1992年第4期385-389,共5页
Journal of Hubei University：Natural Science
基金
湖北省科委资助项目
关键词
杂交早稻
遗传
早稻
水稻
米质
Early hybrid Rice Rice grain quality character Genetic segregation Heritability
