水分胁迫下的大豆叶取向

被引：9

作者：

杨玲

王韶唐

机构：

[1] 西北农业大学

[2] 西北农业大学陕西杨陵浙江师范大学生物系

[3] 陕西杨陵

来源：

西北植物学报 | 1992年 / 01期

关键词：

大豆; 叶取向; 水分胁迫;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

通过大田及盆栽实验,初步探讨了植株水分状况对大豆叶取向运动的影响。大豆末端小叶在木质部水势约为-9.1×10～5Pa时,开始呈直立状态,且大水势下降到-14.4×10～5Pa时开始发生倒位现象。随着水分胁迫加剧(超过两个临界值),大比例的末端小叶发生上述两种现象。中午木质部水势与叶片角有显著相关性。实质上,水分胁迫有诱导并加剧避日性叶取向的作用。干旱植株在复水后不到2个小时,其叶取向便可逆转。大豆叶片避日性取向通过降低接收辐射可防止叶温升高和木质部水势的下降.高度避日态并不影响叶片净光合率。

引用

页码：46 / 51

页数：6

共 10 条

[1]

Orientation and distribution of leaves within soybean canopies. Blad B L,Baker D G. Agronomy Journal . 1972

[2]

Photosynthesis in plant communities as influenced by leaf angle. Pearce R B,Brown R H,Blazer R E. Crop Science . 1967

[3]

Reversible leaf movements in relation to drought adaptation of cowpeas, Viga unguicalata (L.) Walp. Shackel K A,Hall A E. Australian Journal of Plant Physiology . 1979

[4]

Solar tracking, light avoidance indicated by water stress in leaves of kidney bean seedlings in the field. Berg V S,Hsiao T C. Crop Science . 1986

[5]

Leaflet orientation in water-stressed soybeans. MeYer W,Walker S. Agronomy Journal . 1981

[6]

Soybean leaflet movements as an indicator of crop water stress. Osterhuis D M,J Eastham. Crop Science . 1985

[7]

Diaphotonastic and parahelionastic leaf movements in Stylosantkes humilis H.B.K. (Townsville stylo). R. Soc. N. Begg J E,Torssell B W R. Z. Bull . 1974

[8]

Studies on leaf orientation movements in kidney beans (Phaseolus vnlgaris L.).I.The response to light intensity and location of photo-receptor. Sato H,Gotoh K. Japan. Jour.Crop Sci . 1983

[9]

Light induced leaflet orientation in Phaseolus vulgaris L. Wien H C,Wallace D H. Crop Science . 1973

[10]

Effects of leaf orientation on leaf resistance to water vapor diffusion in soybean (Glycine max L. Merr) leaves. Stevenson K R,Shaw R H. Agronomy Journal . 1971

← 1 →