量的遺伝の研究(第8報) : A.水稲 : (a)穂長の遺伝とその遺伝因子の量的支配価に関する研究 : (4)2穂長遺伝因子と1矮性因子D_1の量的支配価について

概要

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1. This work is one of the studies in which the as followswriters intend to make clear the modes of the quantit,ative inheritance in main crops from the view point of breeding. Materials used in this work are the F_1-F_5 generations from the hybrids of the two varieties ,of rice, "NABESIMA" and "KA1RYo-AIKoKUnEN-DAIKO-KUGATA", which were crossed in 194 at the Plantbreeding laboratory of the Kyoto Univ . The total :numbers of the lines and individuals observed are 1. 137 and 85.616 respectively. 2. ,'NABESIMA" is a normal veriety showing a medium stem length and also a medilm length of pa nicles (about 21 cm), while "KAlRYO-AIKOKUHEN-DAIKOKUGATA" is a dwarfish variety with short stems and short penicles (about 17 cm). 3 . The methods of investigation are the same as those already described in the senior writer's previous feports (SYAKUDO, 1948, 1950). 4, The progeny test in regard to the. panicle length was made eonsidering the mean value, standard deviation, coeificient of variability and the range of variance. The. results .,show that the two multiple, genes P_4 and P_5. , and a dwarfish gene D_1 determine the panicle length. The accumulative effect of the genes P_4 and P_5 to the panicle length are of inperfect dominance, while that of D_1 is of perfect dominance. Consequently the genotypes of the parents will be assumed as follows:
日本育種学会の論文
1952-06-30