玉蜀黍の雑種後代による一代雑種採種について
1953 年 2 巻 3 号 p. 142-146
詳細
1953 年 2 巻 3 号 p. 142-146
On the use of advanced generation hybrides as parents of double cross seed corn, a few investigators found that double crosses between F1, F2 or F3 generations of single crosses produced essentially similar yields. The authbrs have inve-stigated this problem from the standpoint of seed production. The materials used in the experiment were single crosses, B 8XA 151, WF9 XM 14 and these parent inbred lines. In 1951, seeds of four inbred lines, two F1 hybrids, two F2 hybrids and four back-crosses were harvested.In 1952, these seeds were planted on field with three replications. Each replicati6n contained four groups and each group consisted. of inbred lines, F1 hybrids, F2 hybrids and back-crosses, respectively. Groups were arranged at random in replications.The results obtained as follows :-
