Analysis of Leaf Photosynthetic Characteristics of Germplasm Resources in Elaeagnus conferta Roxb.
To reveal the differences in the leaf photosynthetic characteristics of Elaeagnus conferta Roxb.germplasm re-sources and to use this germplasm as a basis for screening and identifying high-yielding E.conferta germplasms,the green and new gray leaves of three collected E.conferta germplasm resources,L001,XF3 and GLB1;were used to determine the chlo-rophyll content,photosynthetic activity,and other physiological indices.The results showed significant differences in pigment content between the new gray leaves and green leaves of E.conferta.The chlorophyll a(Chla),total chlorophyll(Chla+b),chlorophyll a/b ratio(Chl a/b),and β-carotene(β-Car)contents of gray leaves were significantly lower than those of green leaves;there were significant differences in the photosynthetic characteristics of the green leaves of the three germplasms and among the physiological indices;and the photosynthetic activity of the green leaves of GLB1 was significantly lower than that of the green leaves.Chla,Chlb,and Chla+b in green leaves were significantly higher than in other germplasm;the actual PSⅡquantum yield[Y(Ⅱ)],photochemical fluorescence quenching coefficient(qP),and photochemical fluorescence quenching coefficient of PSⅡ antennae(qL)of L001 green leaves were significantly higher than those of the other germplasm,which indicated that these plants had the optimal yield potential.This study lays the foundation for the photosynthesis analysis tech-nology application in screening E.conferta germplasm resources.
万方数据
维普
