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題 名 | 落花生 Virginia 型 與 Spanish 型雜種後裔數量性狀遺傳行為之研究=Studies on the Genetic Behavior of Quantitative Characters in the Hybrid Progenies of Virginia and Spanish Peanut |
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作 者 | 林興; | 書刊名 | 中華農學會報 |
卷 期 | 54 民55.06 |
頁 次 | 頁17-24 |
關鍵詞 | Spanish 型; Virginia 型; 落花生; 雜種; 後裔數量; 性狀; 遺傳行為; |
語 文 | 中文(Chinese) |
英文摘要 | The purpose of this experiment is to study the genetic behavior of six quantitative characters in the hybrid progenies of Spanish type × Virginia type. The parents Tainung No.1 (Spanish type) and Florispan runner (Virginia type) and F2 and F3 were the material used in this study. Data on six × characters, days to flower, length of main stem, numer of branches, length of branches, number of pods per plant and weight of pods per plant collected and analyzed. The results indicated that these was significant hybrid vigor for length of main stem and length of branches in segregations. especially in F2. It was also found that the days to flower segregating generation was less than that of their parents and tended toward the Virginia type parent. The mean values obtained from the other characters, number of branches, number of pods and weight of pods were similar to the mid-parent values. From the components of variance analyzes, it was found that the genetic variance for days to flower and number of branches were greater than the environmental variance. The genetic variance for days to flower is composed of largely additive, whereas, for number of branches is merely dominant. The magnitude of environmental variance and genetic variance were almost equal for the number of pods per plants, weight of pods per plant, length of main stem and the length of branches. However, the genetic variance is principally dominance variance for number of pods and weight of pods, while additive genetic effect is more important for length of main stem, and the length of branches. Seven different formulae were used in estimating the heritability of the six quantitative characters. The heritability values obtained from days to flower were high, while those for number of pods and weight of pods per plant were relatively small, the heritabilities for length of main stem, number of branches, and length of branches estimated from different formulae were finite variable. The genotypic, phenotypic and environmental correlation coefficients for the six characters with all possible combinations were calculated. Significant correlations were found between number of pods and weight of pods. The relationships of number of branches, length of branches, and length of main stem to number of pods and weight of pods were positive. However, negative correlations were obtained between days to flower and number of pods or weight of pods per plant. The number of effective factorfs, estimated by using different formulae indicated that the estimate obtained from Panse formulae (K2) is more reasonable, while obtained from Wright (K1) and Castle-Wright's (n) formulae were too low to have any useful meaning. |
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