DEVELOPMENT OF SOYBEAN CULTIVARS(GERMPLASM)WITH HIGHPHOTOSYNTHETIC EFFICENCY(HPE)AND REDISCUSSION OF BREEDING FOR HPE(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2001年02期

Page:

110-115

Research Field:

Publishing date:

Info

Title:

DEVELOPMENT OF SOYBEAN CULTIVARS(GERMPLASM)WITH HIGHPHOTOSYNTHETIC EFFICENCY(HPE)AND REDISCUSSION OF BREEDING FOR HPE

Author(s):

Du Weiguang ¹Zhang Gui ru¹Man Weiqun^?1Chen Yi¹Luan Xiaoy an¹Hao Naibin²Ge Qiaoy ing²Gu Xiuzhi¹

1 .Soybean Inst itute , Hei longjiang Academy of Agri .Sci ., Harbin 150086 ;

2 .Insti tute of Botany , Academy Sinica , Beijing 100093

Keywords:

Soybean ; Hig h photosynthetic eff iciency ; Breeding for high photosynthet ic ef ficiency ; Rediscussion

PACS:

S565.1

DOI:

10.11861/j.issn.1000-9841.2001.02.0110

Abstract:

The relationship betw een single leaf pho tosy nthetic efficiency and grain yield , the breeding object ivesand the procedure and methods of breeding fo r HPE were rediscussed in this paper based on the description ofphotosy nthetic properties, majo r agronomic t raits , yield and breeding process of hig h photosynthetic eff iciencygermplasms , Ha79 -9440 , Ha82 -7799 and cultivars , Heinong 39 and Heinong 40 .The results are as follow s.　　There is a positive correlation between single leaf photosynthetic eff iciency and yield at reproductive stages.Sing le leaf photosy nthetic efficiency is still an impo rtant objective of breeding for HPE .　　HPE is a major w ay fo r developing new cultivars(germplasm)with super high yield , good quality , diseaseresistance and ideal ecoty pe .Ideal ecotype is defined comprehensively having g reater capacity of obtaining sunlight, higher transferring ef ficiency , higher single leaf pho tosy nthetic rate and RuBP Case activity , greater proport ion of pho tosy nthate to seeds , longer photosynthetic duration and nit rogen f ixation abili ty .　　Breeding system fo r HPE is that :creating variation , of which , inducing and sexual crossing were mainlyused at present ;selecting variant s effect ively with combinat ion of t rai ts diag nosing and inst rument measuring .Leaf weig ht per unit and ecoty pe are mainly selected in earlier generations and in later generations , photosyntheticrate , yield and resistance are major objectives of selecting .The procedure of yield test is the same as that inthe t raditional breeding .Pho tosy nthetic physiological targets are photosynthetic ef ficiency and RuBP Case activity.　　Reasonable population st ructure and bet ter soil condition are necessary conditions for yield potential expressingof the cultivars wi th HPE .

References:

1 　赖世登, 刘祚昌.小麦光合性状研究初报[ J] .农业科技情况报,第三期,“ 全国作物高光效育种座谈会论文专辑” , 1978

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