摘要
[目的]探讨和田地区设施温室葡萄品种光合和叶绿素荧光日变化特征,综合评价其光合能力强弱,为该地区温室葡萄引种及栽培管理措施制定提供参考依据.[方法]以新疆和田地区设施温室引入的6个葡萄品种为材料,测定各品种光合有效辐射(PAR)、叶绿素相对含量(SPAD)、光合与叶绿素荧光参数,并利用主成分分析对各鲜食葡萄品种光合能力进行综合性评价.[结果](1)设施温室PAR在不同位置总体表现出棚前＞棚后＞棚中,在不同架面位置总体表现为架上＞架中＞架下.(2)葡萄叶片SPAD值在不同架面位置表现为架上＞架中＞架下,在品种间由高到低依次为'克瑞森无核''夏黑''新郁''户太八号''阳光玫瑰''妮娜女皇'.(3)各品种叶片Pn、Gs、Tr均呈现出双峰形日变化曲线,Gi总体呈现U形或W形日变化规律;Fv/F.与Fv/Fm总体上呈现先下降后上升的日变化规律.(4)6个葡萄品种的光合能力表现为'克瑞森无核'＞'夏黑'＞'阳光玫瑰'＞'新郁'＞'户太八号'＞'妮娜女皇'.[结论]'克瑞森无核'和'夏黑'相比其他品种有较高的Pn、Gs、Tr、Fo、Fm和较低的Fv/Fo与Fv/Fm,能够适应和田地区的高温与高光强设施环境.
Abstract
[Objective]The diurnal variation characteristics of photosynthesis and chlorophyll fluorescence of greenhouse grape varieties in Hotan area were investigated,and their photosynthetic capacity was com-prehensively evaluated,in order to provide reference for the introduction and cultivation management of greenhouse grapes in this area.[Methods]Six grape varieties were introduced into Hotan greenhouse as materials.The photosynthetic active radiation(PAR),relative chlorophyll content(SPAD),photosynthe-sis,and chlorophyll fluorescence parameters of each variety were analyzed,and the principal component analysis was used to comprehensively evaluate the ability of each grape variety.[Results](1)The PAR levels of greenhouse in different positions were in the order:Before the shed＞behind the shed＞middle of the shed,while the overall performance in different trellis was in the order:On the trellis＞middle of the trellis＞under the trellis.(2)The SPAD values of grape leaves on different trellis were in the order:on the trellis＞middle of the trellis＞under the trellis,while the order from high to low among varieties:'Crimson Seedless','Summer Black','Xinyu','Hutai8','Sunshine Muscat',and'Queen Nina'.(3)The diurnal variation of Pn,Gs,and Tr of each variety showed a bimodal curve,and the diurnal variation of Ci showed a U-shaped and W-shaped variation.Fv/Fo and Fv/Fm generally showed a downward trend and then an upward trend.(4)The photosynthetic capacity of the six grape varieties was in the order:'Crimson Seedless'＞'Summer Black'＞'Sunshine Muscat'＞'Xinyu'＞'Hutai 8'＞'Queen Nina'.[Conclusion]'Crimson Seedless'and'Summer Black'have higher Pn,Gs,Tr,Fo,Fm and lower Fv/Fo and Fv/Fm,which are able to adapt to the Hotan environment of high temperature and high light intensity.
基金项目
新疆维吾尔自治区重点研发计划(2020B01003)
国家科技期刊平台
NSTL
万方数据