摘要
通过对旱地甜菜叶片生长特性及摘除不同叶组对块根产量、含糖量、显微结构的影响研究 ,结果表明 :甜菜第 1 0~ 2 0片叶的叶龄最长 ,积温最高 ,是甜菜的主要功能叶 ;甜菜从第2 0片叶期起进入块根、糖份增长期 ,从第 5 5叶期起进入糖份积累期 ;摘除不同叶组的叶片对甜菜块根产量、含糖量及显微结构均有不同程度降低作用 ,摘除前期叶组对甜菜块根产量、产糖量、根径减幅较大 ,摘除后期叶组对块根含糖量、维管束环数、维管束环密度减幅较大 ;摘除第 1~
Growing character of sugar beet leaf in dry land one influence of cutting different leaf groups on beet root yield,sugar content,microstructure of beet root were studied.The results showed that No.10 to No.30 leaves,charactered with longest growimg period,hight temperature accumulation,were main function leaves.From No.20 leave,sugar beet enter into beet root,sugar inercasing period.From No.55 leaf,it enter into sugar accumulation period.Cutting different leaf groups has different effect on root yield,sugar content and root microstructure.Cutting early leaf group has consider effect on root yield,sugar content and the width of root.Cutting late leaf group considerably decrease the number and density of vascular bundle.Cutting No.1 to No.30 leaves has greatest effects on sugar beet.
出处
《西北植物学报》
CAS
CSCD
2002年第5期1203-1208,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
陕西省科技攻关资助项目 (96K0 6-G1 2 )
关键词
黄土高原
甜菜
叶片生长特性
块根产量
含糖量
Loess plateau
sugar beet leaf
growing characters
root yield and sugar content
effect