Study on photosynthetic physiology characteristics of Chinese chestnut in different types of shoots during flowering and young fruit period
This research explored the interactions of the leaf chlorophyll contents,photosynthetic parameters and chlorophyll fluorescence characteristics of Chinese chestnut ‘Yanshanzaofeng' (C.mollissima ‘Yanshanzaofeng') in different types of shoots during flowering and young fruit periods.The results indicated that chlorophyll contents in leaves on different shoots were different,the fruit-bearing shoot was higher than non-fruiting shoots; young fruit period was 1.08％ higher than flowering period,but the content of chlorophyll a/b was lower than flowering period.The values of Pn were fruit-bearing shoots＞vegetative shoots＞staminate shoots,Gs and Tr were fruit-bearing shoots＞staminate shoots＞vegetative shoots,and Ci were staminate shoots＞fruit-bearing shoots＞vegetative shoots in different type of shoots during flowering period.During young fruit period the photosynthetic parameters was higher in fruit-bearing shoots Pn (5.62 μmol· m2· s1),Gs (0.152 mol· m2· s-1),Ci (234.33 mol· mol-1),Tr (2.97mol · m-2 · s-1) and WUE (1.89 g · dm-2 · h-1); Chlorophyll fluorescence parameters had no significant difference in different types of shoots at the same period,the Fv'/Fm',qN and NPQ during young fruit period were lower than those of the flowering period,and the qP was just reversed.
Chinese chestnutchlorophyll contentphotosynthetic physiologychlorophyll fluorescence characteristic
NETL
NSTL
万方数据
维普
