水分胁迫对成年糯米糍荔枝末次秋梢发育和成花的影响  

Effects of water stress on development of the last autumn shoots and flower induction of Nuomizi litchi cultivar

作　　者：王泽槐[1] 宋世文 李建国[1] 赵晓勤[3] 谢世恭 曾亚妮 谢永红 

机构地区：[1]华南农业大学中国荔枝研究中心,广州510642 [2]深圳市宝安区农业科学技术推广中心,广东深圳518101 [3]华南农业大学园艺学院南方果树生理研究室,广州510642 [4]深圳市南山区西丽果场,广东深圳5108055

出　　处：《果树学报》2007年第3期319-323,共5页Journal of Fruit Science

基　　金：深圳市农业综合开发基金。

摘　　要：以16年生糯米糍荔枝为试材,研究了水分胁迫对其末次秋梢发育和成花的影响。结果表明,干旱处理的末次秋梢萌芽抽梢期主要集中在8月下旬到9月上旬,保湿处理抽梢时期集中在9月上中旬,10月上旬干旱处理没有新梢抽出而保湿处理还有少量新梢抽生;9月份各旬抽生的末次秋梢从萌芽至老熟所需的时间均表现为保湿处理比干旱处理多11～13d,但末次秋梢从老熟到白点出现所需时间,保湿处理平均为39d,比干旱处理缩短17d;说明中度水分胁迫使末次秋梢的萌芽期提前,并缩短了秋梢的老熟时间,但是大大地延长了白点出现所需的时间。此外,干旱和保湿处理的植株枝梢成花率单株间差异较大,但总的来看中度水分胁迫对糯米糍荔枝成花没有促进作用。Effects of water stress on the last autumn shoot maturation and flower induction of 16-year-old Nuomici litchi was investigated. The main results were as follows, the last autumn shoot flushing time of dry and wet treatment were mainly in early and mid September, and in late August and early September respectively. There was no new flushing for dry treatment in early October but there was some flushing for wet treatment. Days from the bud break to shoot maturation of the last autumn shoot flushing in each ten days of September for wet treatment were 11-13 days more than those of dry treatment, but days from shoot maturation to the emergence of whitish millet was average 39 d, which was 17 d shorter than that of dry treatment. These results indicated that the moderate soil water stress could advance the flushing time of the last autumn shoot, shorten shoot maturation time and greatly prolong the whitish millet emergence time. Moreover, a largely variation of flowering shoot in individual plant between treatments was found, but on the whole drought treatment had no positive effect on flower induction of Nuomici litchi.

关 键 词：荔枝 水分胁迫 末次秋梢 发育 成花 

分 类 号：S667.1[农业科学—果树学]