摘要
海带(Laminaria japonica Aresch.)跟其他海带类植物一样,体作带状。它的叶片长度是一个重要的经济性状,是海带生长的主要指标。关于海带类植物叶片长度的生长,过去曾有过一些研究。Parke(1948)曾观察了糖海带[L.saccharina(L.)]的自然生长。
This paper discusses the genetical factors affecting the growth in the frond length of Laminaria japonica Aresch.vernacularly called"Haidai".(1)The frond length is a quantitative character with a continuous variation showing normal distribution.(2)There were evidences for the frond length to be an inheritable character.The average length of the offspring from a pedigree with a longer frond was,as a rule,significantly longer than that from a pedigree with a shorter frond.The distribution of various lengths of the offspring from a short frond was seen to overlap with that of offspring from a long frond.(3)Through continuous inbreeding and selection it would be possible to get many inbred lines with different lengths of frond and thus to obtain a breed with a much longer frond and another one with a much shorter frond.(4)The shorter sporelings from a population could grow,if transplanted in time,to a length attained by the longer sporelings of the same population,provided the difference in length between the shorter and longer sporelings was not too great,for example,not over 25 cm.If the difference in length was very great,for example,over 30 cm,the shorter sporelings would not on the average be able to reach the characteristic length of the pedigree.(5)The growth of the frond length was analysed to be governed by a number of cumulative,nondominant genes as well as many environmental factors.
作者
方宗熙
蒋本禹
T.C.FANG;B.Y.JIANG(Shantung College of Oceanology;Institute of Oceanology,Academia Sinica)
出处
《海洋与湖沼》
1963年第2期172-182,共11页
Oceanologia Et Limnologia Sinica
