摘要
目前,海带(Laminaria japonica Aresch)养殖的主要问题在于产量和貭量的提高。影响海带产量和质量的因素很多,有环境的因素,又有遗传的因素。如何区别环境和遗传的影响,如何控制环境和遗传,以提高海带的产量和貭量,是海带养殖研究的主要课题之一。叶片是光合作用的主要器官。
Three breeds of Laminaria japonica were used to study the inheritance of frond-length.The following preliminary conclusions are made:(1)The frond-length was a quantitative character with continuous variations showing normal distribution.(2)As the coefficient of correlation between parents and offsprings in frond-length was found to be 0.7,p=0.01,the character under study was considered to be genetically controlled.(3)The growth of the frond length was observed to be controlled by various environmental factors and many genetic ones without dominance.(4)The genetic factors controlling the frond-length were found to be active in the very young sporophytes consisting of about a hundred cells.(5)From the analysis of the variances of the frond length the heritability of the character under study was estimated for the first time to be about 0.5.(6)The study of the variance of frond-length showed that the common Laminaria under cultivation possessed a high degree of hybridity,and from this some good breeds could be selected.
作者
方宗熙
蒋本禹
李家俊
T.C.FANG;B.Y.JIANG;J.J.LI(Shantung College of Oceanology;Institute of Oceanology,Academia Sinica)
出处
《海洋与湖沼》
1965年第1期59-66,共8页
Oceanologia Et Limnologia Sinica
