全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

小麦穗粒数的调节Ⅱ开花前遮光对穗碳水化合物代谢和内源激素水平的影响

DOI: 10.3321/j.issn:1000-7091.1997.04.009, PP. 42-47

Keywords: 小麦,穗粒数,碳水化合物,激素,遮光

Full-Text   Cite this paper   Add to My Lib

Abstract:

在小麦开花前16~8d和开花前8d至开花期进行遮光处理(遮光率70%~80%)分别使穗粒数减少了37%和23%.在处理期间,遮光穗的还原糖(葡萄糖+果糖)和果聚糖浓度显着低于对照穗,而蔗糖浓度与对照差异较小。遮光处理降低了穗中蔗糖-蔗糖果糖基转移酶(SST)和可溶性酸性转化酶(AI)的活性。分析穗器官吲哚乙酸(IAA)、玉米素/玉米素核苷(Z/ZR)和脱落酸(ABA)含量表明,遮光处理对穗中IAA和Z/ZR水平没有明显影响,但显着提高了穗中ABA水平。这些结果暗示,遮光限制了同化物供给,也限制了穗库对同化物的转化和利用;穗库活性的下降可能与ABA水平的上升有关。

References

[1]  王志敏,王树安,苏宝林. 小麦幼穗器官中蔗糖降解酶的活性与分布. 北京农业大学学报,1995,21(2):147~151.
[2]  王志敏,王树安,苏宝林. 小麦穗粒数的调节 Ⅰ 开花前穗果聚糖代谢及其与小花结实的关系. 中国农业大学学报,1996,1(5):21~26.
[3]  Fischer RA,Stockman YM. Kernel number perspike in wheat:r esponses to preanthesis shading. Aust JPla nt Physio l,1980,7:169~180.
[4]  王志敏,王树安,苏宝林. 小麦穗粒数的调节(综述). 见:邹琦,王学臣,主编. 作物高产、 高效生理学研究进展. 北京:科学出版社,1994.
[5]  何仲佩. 农作物化学控制实验指导. 北京:北京农业大学出版社,1994.
[6]  Evans LT. The influence of ir radiance before and after ant hesis on gr ain yield and its compo nents in microcrops of wheat grown in a constant daylent hand temperature regime. Field Cro ps RES,1978,1:5.
[7]  St ockman YM,Fischer RA,Br itt ain EG. Assim ila te supply and flo ret development within spike ofw heat. Aust J Plant Phy siol,1983,10:585~594.
[8]  Saini HS,Aspinall D. Ster ility in w heat induced by water deficit and high temperature:possible mediat ionby ABA. Aust J Plant physiol,1982,9:529~537.
[9]  Mengel K,Friedrich B,Judel GK. Effect of light intensity on the concent ration of phyt ohormo nes in devel-o ping w heat gr ains. JPlant Physiol,1985,120:255~266.
[10]  Lee B,Martin P,Bangerth F. The effect of sucro se on the levels of ABA,IAA and Z/ ZR in wheat earsg rowing in liquid culture. Physiol Plant,1989,77:73~80.
[11]  Sung SS,Xu DP,Bla ck CC. Identification of activety filling sucrose sinks. Plant Physiol,1989,89:1117~1119.
[12]  Jermyn MA. A new method for the determination of keto hex oses in the pr esence of aldohex oses. Na-ture,1956,177:38.
[13]  Wagner W,Wiemken A,Matile P. Regulation of fruction metbolism in leaves of barley. Plant Physiol,1991,42:77~79.
[14]  Morris DA. Hormonal regulation of assimilate partition:Possible mediation by invertase. News BullPlant Growth Regel Group,1983,6:2335.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133