中国农业科技导报2018，Vol.20Issue(3)：10-19,10.DOI:10.13304/j.nykjdb.2017.0448
不同砧木嫁接对‘桂栗一号’大果锥栗苗木生长及光合特性的影响
Effects of Different Rootstocks on Growth and Photosynthetic Characteristics of Large-fruit Castanen henryi 'Guili 1'
摘要
Abstract
In order to select excellent rootstock of large-fruit Castanen henryi ' Guili 1 ' and provide theoretical support for scion-stock combination interaction mechanism,C.henryi ' Guili 1' was grafted onto C.mollissima and C.Henryi,respectively,and their survival ratios were observed.In addtion,the C.mollissima and C.henryi seedlings were as the controls,and then the growth,Pn-PFD response curve and diurnal variation of photosynthesis of the grafted seedling were measured.The results showed that the survival ratio of the grafted seedling whose rootstock was C.henryias was much higher than that of whose rootstock was C.mollissima.Both kinds of grafted seedlings grew weaker than that of the controls.The differences of light response parameters,such as maximum net photosynthetic rate (Pmax),light saturation point (LSP),light compensation point (LCP),apparent quantum yield (AQY) and dark respiration rate (Rd) on C.henryi ' Guili 1' were not significantly affected by 2 different rootstocks.The range of applicable light intensity of 4 kinds of seedlings was C.mollissirna =C.mollissima/Guili 1 (C.henryi ' Guili 1 ' grafted onto C.mollissima)＞C.henryi/Guili 1 (C.henryi ' Guili 1' grafted onto C.henryi)＞C.henryi.The diurnal variations of net photosynthetic rate (Pn) in 4 kinds of seedlings were dual-peaked models,and the Pn of 4 kinds of seedlings all peaked at 8:40～10:00 a.m.The midday depression of photosynthesis appeared at 14:00,and the depressive range of C.henryi/Guili 1 and C.henryi were wider than that of C.mollissima and C.mollissima/Guili 1.Compared with C.mollissima and C.mollissima/Guili 1,C.henryiand C.henryi/Guili 1 were more seriously affected by environmental factors,such as scorching heat and intense light.With respect to the trends of daylong changes of photosynthetic parameters,such as Pn,stomatal conductance (Gs),transpiration rate (Tr),internal cellular CO2 concentration (Ci),stomatal limitation (Ls) and water use efficiency (WUE),C.mollissima and C.mollissima/ Guili 1,C.henryi/Guili 1 and C.henryi were similar,respectively.The differences of all-day organic matter accumulation on both kinds of grafted seedling were very small.The main physiological and ecological factors affecting the daylong Pn of grafted seedlings were photosynthetically active radiation (PAR),Gs,Tr,Ciand Ls.In terms of affinity,C.henryi was more suitable for the rootstock of C.henryi ' Guili 1'.But it was recommended that C.mollissima was used as rootstock in high altitude or strung sunshine areas.关键词
大果锥栗/嫁接亲和性/光合特性/光响应曲线/日变化Key words
large-fruit Castanen henryi/graft compatibility/photosynthetic characteristics/Pn-PFD response curve/diurnal variation分类
农业科技引用本文复制引用
张俊杰,陈宗游,韩愈,王满莲,唐辉..不同砧木嫁接对‘桂栗一号’大果锥栗苗木生长及光合特性的影响[J].中国农业科技导报,2018,20(3):10-19,10.基金项目
中国科学院广西植物研究所基本业务费项目(桂植业 15010) （桂植业 15010）
桂林市科学研究与技术开发计划项目(20150121)资助. （20150121）
