摘要
试验对９个燕麦（ＡｖｅｎａｓａｔｉｖａＬ．）品种（系）开花后光合产物的积累和分配特点进行分析。结果表明，燕麦花后光合产物向穗部的分配率（７０％～８５％）普遍低于小麦等其它禾谷类作物。燕麦开花后，株高仍有较大增长，为维持营养生长的需要，光合产物必然会部分地分配到茎叶，是其分配率低的重要原因。开花后，前期（１～１６天）株高增长较大，占花后株高总增量的７０％左右。因此，灌浆前期光合产物向穗部的分配率（４５％～６０％）要低于后期（７０％～１３０％）
Nine accessions were used to investigate the accumulation and mobilization ofpost-anthesis photomass in oat (Avena sativa L.). The results showed that 70%～85% ofpost-anthesis photomass accumulation (PAPA) was contributed to the grain, which was lowerthan those in other cereal crops, such as wheat. The plant height of oats increased continu-ously after flowering, so that the PAPA must be partially distributed to the stems to main-tain the vegetative growth. This might be the important reason for the low percentages. Sincethe increase of plant height was more in first 16 days after anthesis, which was about 70% ofthe total increase, the PAPA allocated to the grain was lower (45%～60%) in early period ofgrain-filling than that in late Deriod (70%～130%).
出处
《青海畜牧兽医杂志》
1995年第4期3-6,共4页
Chinese Qinghai Journal of Animal and Veterinary Sciences
基金
国家教委优秀年轻教师基金
关键词
燕麦
光合产物
积累和分配
株高
Oats, Photomass, Accumulation and distribution, Plant height
