頁籤選單縮合
題 名 | 茶樹自交及雜交的結實率與其雜交第一代經濟性狀之相關=Studies on the Percentages of Fruit-setting of Self and Cross-pollination and Its Relation to Some Economic Charactrs of the F1 Hybrids in Tea Plant |
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作 者 | 吳振鐸; | 書刊名 | 中華農學會報 |
卷 期 | 59 民56.09 |
頁 次 | 頁24-39 |
關鍵詞 | 茶樹; 自交; 雜交; |
語 文 | 中文(Chinese) |
英文摘要 | A series of field experiments on self- or cross- pollination have been conducted at Pin-chin Tea Experimental Station, since 1951. There were more then eight hundreds F1 hybrids to be investigated with respect to the yield of green leaf, quality of made tea and some other agronomic characters. The object of this paper is to report the results of the study of the percentage of fruit-setting of tea plant when they are self- or cross-pollinated and their relation to the economic characters of the F1 hybrids in tea plant. 1. It was observed that the percentage of fruit-seetting either self-or cross-pollination was remarkably higher when pollinations were made at the later flowering stage from Dec. to Jan. than it was made at the early stage. 2. The percentage of fruit-setting of self-pollination for some 323 F1 clones was average at 1.48%, while that for the parents of these F1 was only 0.71%. Some F1 of higher self-compatibility and one made sterile F1 which was a biclone (Chin-shin dar-pang×Jaipuri) of No.949, were salected from these F1 clones. 3. The percentage of fruit-setting of var. sinensis crossed with var. assamica was higher than that of var. sinensis crossed with var. sinensis. The cross-incompatibility between the "Species" of Camellia genus was signficant. It was found that the percentage of fruit-setting of C. sinesis crossed with C. tenuifolia was only 1.83%. 4. The percentage of fruit-setting among different methods of crossing are shown in the following table: 5. The relationships between the percentage of fruit-setting and the different crossing procedure: (1) Negative correlations between the percentage of fruit-setting in cross-pollination and the parental average of the percentage of fruit-setting in self-pollination was observed to be r=-0.3003, P<0.1. But to correlation was found between the percentages of fruit-setting and the single-cross and double-crosses; or double-cross and the selfing of the four parents. (2) The parcentage of fruit-setting of the single-cross was positively correlated with the percentage of fruit-setting of back-cross or three-way cross (P<0.2). 6. The relationships between the percentage of fruit-setting and the economic characters of the F1 hybrids are: (1) The percentage of fruit-setting from cross-pollination was positively correlated with the yielding ability and the % surival of sutting of their F1 hybrids (P<0.1), whereas it was negatively correlated with the quality of Oolong tea or Paochong tea and Black tea (P<0.05 or <0.1). (2) It was found that a significant negative correlation between the percentage of fruit-setting from self-pollination of parents and the quality of black tea of their F1 hybrids (P<0.02). |
本系統中英文摘要資訊取自各篇刊載內容。