板栗不同类型枝条花期和幼果期光合特性研究

摘要:以板栗‘燕山早丰’(Cmollissima’Yanshanzaofeng’)为试验材料,对其花期和幼果期不同类型枝条叶片叶绿素含量、光合参数、叶绿素荧光特性等指标的变化规律进行研究。结果表明,板栗不同类型枝条叶片叶绿素含量均存在差异,结果枝叶片叶绿素总量比非结果枝高1.08%;幼果期叶片叶绿素总量高于花期,但花期叶绿素a/b却高于幼果期;不同类型枝条在花期净光舍速率(鼽)的顺序为结果枝〉营养枝〉雄花枝,气孔导度(岱)与蒸腾速率(n)的顺序为结果枝〉雄花枝〉营养枝,胞间c02浓度(a)的顺序为雄花枝〉营养枝〉结果枝,而在幼果期光合参数指标均为结果枝最高,分别为砌(5.62tzmol·m-2...

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Published in东北农业大学学报 Vol. 44; no. 10; pp. 76 - 81
Main Author 郭素娟 谢鹏
Format Journal Article
LanguageChinese
Published 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083 2013
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ISSN1005-9369

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Summary:摘要:以板栗‘燕山早丰’(Cmollissima’Yanshanzaofeng’)为试验材料,对其花期和幼果期不同类型枝条叶片叶绿素含量、光合参数、叶绿素荧光特性等指标的变化规律进行研究。结果表明,板栗不同类型枝条叶片叶绿素含量均存在差异,结果枝叶片叶绿素总量比非结果枝高1.08%;幼果期叶片叶绿素总量高于花期,但花期叶绿素a/b却高于幼果期;不同类型枝条在花期净光舍速率(鼽)的顺序为结果枝〉营养枝〉雄花枝,气孔导度(岱)与蒸腾速率(n)的顺序为结果枝〉雄花枝〉营养枝,胞间c02浓度(a)的顺序为雄花枝〉营养枝〉结果枝,而在幼果期光合参数指标均为结果枝最高,分别为砌(5.62tzmol·m-2·s-1),Gs(O.152mol·Hr2·S-1),Ci(234.33mol·mol-1),Tr(2.97mol·m-2os。)和WUE(1.89g·dm-2·h-1);不同类型枝条在相同时期叶绿素荧光参数无显著差异,结果枝和营养枝有效光化学量子产量(FvyFh)、PsⅡ非光化学淬灭系数(NPQ)、非光化学猝灭(qN)在幼果期均小于花期,PsⅡ光化学淬灭系数(qP)~N于花期。
Bibliography:GUO Sujuan, XIE Peng(Key Laboratory for Silviculture and Conservation of China Education Ministry, School of Forestry, Beijing Forestry University, Beijing 100083, China)
Chinese chestnut; chlorophyll content; photosynthetic physiology; chlorophyll fluore-scence characteristic
23-1391/S
This research explored the interactions of the leaf chlorophyll contents, photosynthetic parameters and chlorophyll fluorescence characteristics of Chinese chestnut 'Yanshanzaofeng' (C. molli- ssima '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 stami
ISSN:1005-9369