日光温室秋茬甜瓜果实生长发育与糖分积累的关系分析  

Relation between fruit development and sugar accumulation of melon planted during autumn in greenhouse

作　　者：杨世梅[1] 陈年来[1,2] 康恩祥[2] 纪海波[1] 李玉明[1] 

机构地区：[1]甘肃农业大学农学院,甘肃兰州730070 [2]甘肃农业大学资源与环境学院,甘肃兰州730070

出　　处：《干旱地区农业研究》2012年第6期107-112,共6页Agricultural Research in the Arid Areas

基　　金：甘肃省干旱生境作物学国家重点实验室开放基金课题资助(GSCS-2010-006)

摘　　要：为揭示日光温室特殊环境下甜瓜果实大小和糖分积累的规律和特点,以果型大小和成熟期不同的两个甜瓜品种为试验材料,于果实发育的不同时期观察测定了果实纵横径、果肉细胞数目、细胞大小和糖分含量。结果表明:甜瓜果肉细胞数目快速增长主要发生在花后3 d内。甜瓜果实细胞大小在花后3～14 d迅速增大。温室甜瓜果实体积快速增长期在花后3～21 d,甜瓜果实大小增长存在明显的品种差异。甜瓜果肉还原糖(果糖和葡萄糖)快速积累期在花后14～28 d(玉金香)或21～35 d(银帝)。两个品种蔗糖和总糖快速积累均主要发生在果实成熟前2～4周。同品种果实体积大小和细胞长度和宽度极显著相关,和细胞数目相关不显著,玉金香和银帝品种间体积差异主要原因是细胞数目不同。甜瓜果实糖分增高主要是蔗糖量的不断积累,玉金香含糖量高于银帝的主要原因是蔗糖积累速率较快。The fruit diameter, cell number and size, and flesh sugar content of two melon cultivars, Yujinxiang and Yindi, were determined to evaluate off season dynamics of melon fruit size and sugar accumulation grown in greenhouses. The results showed that rapid increase of fruit cell number took place in 3 days after blossom （DAB）. Cell size increased quickly during 3 - 14 DAB. The fruit volume increase occurred mainly during 3 - 21 DAB. The reductive sugar of melon accumulated mainly during 14 - 28 d DAB （Yujinxiang） and 21 - 35 d DAB （Yindi）. The total sugar in flesh accumu-lated rapidly during 2 - 4 weeks before ripening. The volume of the same variety of fruit had significant correlation with the length and width of cells, but relates not significant to cell number, the main reason for volume＇ s difference between Yindi and Yujinxiang was the cell number. The increasion of sugar was mainly due to the accumulation of sucrose content, the total sugar of Yujinxiang was much more than Yindi mainly because of the rapid accumulation of sucrose.

关 键 词：甜瓜 温室生产 果实大小 细胞数目 糖分积累 

分 类 号：S652[农业科学—果树学]