摘要
以金冠、汉瑞、红港、卡尔红为试材，探讨了桃枝条梢端生长与环境温度、叶水势和比叶重之间的关系及其昼夜变化规律。表明：在试验条件下枝条梢端生长速率与环境温度呈显著正相关，与一天中早、晚碳水化合物积累也呈显著相关，而与叶片水势变化无关。梢端生长速率昼夜总的变化趋势与气温变化相吻合，最大值出现在平均气温最高的傍晚（１６：００～２０：００），最小值出现在平均温度最低的凌晨（０：００～８：００）。在２５±０．５℃恒温条件下，梢端生长速率最大值出现后，并不随即下降，而是保持这个生长速率直至午夜，尔后逐渐降至最低值。太阳升起后，生长速率又逐渐回升。
Studles with peach var.Goldcrest ,O' Hery ,Red Haven and Cal Red revealed thatshoot tip
growth rate wassignificantly related to temperature and carbohydrate accumulation lev-el,but
there was no relation to leaf water potential. The diurnal pattern of shoot tip growth ratetallied
with changes of temperature,with maximum growth in the lateafternoon(16:00-20:00)and
minimum growth from deep night to morning (0: 00-8: 00)When temperature kept at 25±0.5℃
constantly ,the reached maximum growth did not immediately decline ,but retained till mid-
night.
出处
《落叶果树》
北大核心
1994年第2期5-9,共5页
Deciduous Fruits
关键词
桃
枝条生长
温度
叶水势
比叶重
peach, shoot tip growth ,temperature ,l eaf water potential , leaf specificweight.
