行政院農業委員會台南區農業改良場  研究彙報第23號

催芽對葡萄蓄積14C-光合成產物再轉移之影響

張明聰

摘  要

張明聰.1989.催芽對葡萄蓄積14C-光合成產物再轉移之影響。台南區農業改良場研究彙報23:75~89。

2年生自生根盆栽巨峰葡萄植株,於秋季時地上部處理14CO2,翌年2月修剪後以刻傷加2-氯乙醇及氰氨基化鈣懸浮液加Merit液肥分別催芽,同時以自然萌芽為對照,調查不同催芽方法對蓄積14C再轉移新梢之影響。葡萄於秋季製造之14C-光合成產物,在落葉時,有67%蓄積於根、幹及結果母枝中,其中以根部為最大的貯藏器官。植株修剪後使用氰氨基化鈣懸浮液加Merit液肥催芽者,萌芽較快,由貯藏器官再轉移至新梢之14C在6葉期以前即已達21%。而以刻傷加2-氯乙醇催芽,或修剪後無催芽者,萌芽不齊且較慢。再轉移至新梢之蓄積14C僅分別為10%及14%,而且在6葉以前體內14C之消耗量較氰氨基化鈣懸浮液加Merit液肥處理者高出90%。易言之,如用氰氨基化鈣懸浮液加Merit液肥催芽,可減少樹體碳水化合物之消耗,促進其再轉移至新梢以幫助新梢之生長。此結果亦可由自動放射照相中得到證明。


Retranslocation of Accumulated 14C-assimilates as Affected by Dormancy Breakers in “KYOHO” grapevines

Ming-Tsong Chang

Summary

Two-year-old potted “Kyoho” grapevines were supplied with 14CO2 in autumn, and treated with mixed solution of cynamide and Merit, ethylene-chlorohydrins with nickling and non-treatment, respectively, after pruning (February the following year). The accumulation and retranslocation of 14C-assimilates, the percentage and efficiency of budbreak were investigated from leaf-fall stage to 12-leaf stage of newly developed shoot in following spring. At the leaf-fall stage, 67% of 14C-photosynthates were distributed to the roots, trunk and cane, and especially higher ratio in the roots. The percentage and efficiency of budbreak were evidently higher for the treatment of mixed solution of cynamide and Merid after pruning, and reached a maximum percentage retranslocation of 14C as much as 21 at 6-leaf stage, but only 10 and 14 for the treatment with ethylene-chlorohydrins with nickling and non-treatment, respectively. At 6-leaf stage, the respiration consumption of 14C was lower for the treatment of mixed solution of cynamide and Merid which promotes the total quantity and velocity of retranslocation of stored carbohydrates and the newly shoot growth. Such a results was recognized also by auto-radiography.



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