摘要
1986—1987年于河南安阳在田间气象条件下对棉花(Gossypium hirsutum L.)遗传型不同的4个品种(中棉12、鲁棉1号、PD4548、PD0109)的净光合速率、暗呼吸速率.光呼吸速率等进行了研究,认识到棉田光合光量子通量密度、温度、空气水汽压亏缺、CO_2浓度等是控制棉花净光合速率的重要农业气象生态因子。研究发现,抗病高产品种中棉12的光呼吸速率、暗呼吸速率、光补偿点及铃期 CO_2补偿点均低于其他遗传型,而纤维比强度高的 PD 种质系的净光合速率则较其他遗传型高。因而认为可以以高净光合速率、低光呼吸速率、低暗呼吸速率、低CO_2补偿点、低光补偿点协调一致为目标,选育具高光合生产力的高产优质棉花品种,也可通过改善环境获得优质高产。
The net photosynthetic rates,dark respiration rates and photorespiration rates offour cotton(Gossypium hirsutum L.)genotypes(Zhongmian 12,Lumian 1,PD4548,PD0109)were studied under the meteorological conditions of the cotton field atAnyang,Henan Province in 1986—1987.It was known that photosynthetic photoflux density(PPFD),temperature,air vapor pressure deficit(VPD),CO_2concentration were important agrometeorological ecological factors controling netphotosynthetic rate of cotton leaf.It was found that the photorespiration rate,darkrespiration rate,light compensation point,and CO_2 compensation point of floweringand boll-forming stage of Zhongmian 12,the high yielding variety,were lower thanthose of other genotypes,but the photosynthetic rates of PD strains whose fiber quality is better were higher than those of others.It was considered that high netphotosynthetic rate,low photorespiration rate,low dark respiration rate,low CO_2compensation point,low light compensation point could be used as criteria in the selection of new cotton varieties with higher lint yield and better fiber quality.It was also possible to get good fiber quality and high lint yield through the improvement ofenvironmetal conditions.
出处
《作物学报》
CAS
CSCD
北大核心
1990年第4期317-323,共7页
Acta Agronomica Sinica
关键词
棉花
光合作用
气象环境
遗传型
Cotton
Photosynthesis
Genotype
Meteorological environment
