摘要
为探求桃光合性能的遗传规律,以6个桃品种及其组配的8个杂交组合幼苗(F1)群体为试材,对其光合、荧光性状的杂种优势及亲子遗传相关进行了分析。结果表明,绝大多数组合叶绿素含量、类胡萝卜素含量、水分利用效率(WUE)、CO2补偿点(CCP)和PSⅡ实际光化学效率(Yield)以正向中亲、超亲优势为主;净光合速率(Pn)、光补偿点(LCP)、光饱和点(LSP)、饱和光强净光合速率(LSPn)、表观量子效率(AQY)、CO2饱和点(CSP)、CO2饱和净光合速率(CSPn)、羧化效率(CE)、表观电子传递速率(ETR)、PSⅡ最大光化学效率(Fv/Fm)和非光化学淬灭系数(NPQ)以负向中亲、超亲优势为主;亲子相关分析表明,除CSP和Fv/Fm外,各性状F1值与父、母本,高、低亲值,中亲值和双亲差值相关性不大;类胡萝卜素含量、Pn、LSP、LSPn、CCP、CSP、CSPn和初始荧光(Fo)杂种优势大小与双亲差值显著或极显著负相关。在利用桃光合优势育种时应根据育种目标在亲本选配时选择差异适当的双亲。
Taking six peach（Prunus persica L.）varieties and eight crossbreed combinations of them（F1）as materials,photosynthetic characteristics,chlorophyll fluorescence characteristics as well as their heterosis and parent-offspring correlation were studied in September to investigate the inheritance of photosynthetic performance.The results showed that positive mid-parent heterosis and transgressive heterosis were higher on chlorophyll content,carotenoid content,water use efficiency（WUE）,CO2 compensation point（CCP）and PSⅡ actual photochemical efficiency（Yield）of most combinations while negative heterosis were higher on net photosynthetic rate（Pn）,light compensation point（LCP）,light saturation point（LSP）,light saturated net photosynthetic rat（LSPn）,apparent quantum yield（AQY）,CO2 saturation poin（tCSP）,CO2 saturated net photosynthetic ra（tCSPn）,carboxylation efficiency（CE）,electron transport rate（ETR）,PSⅡ maximal photochemical efficiency（Fv/Fm）and non-photochemical quench（NPQ）.The behavior value of characteristics in F1 was less correlated with that of all parents except CSP and Fv/Fm after parent-offspring correlation.Meanwhile,the relative heterosis was correlated with different value between parents on carotenoid content,Pn,LSP,LSPn,CCP,CSP,CSPn and minimal fluorescence（Fo）.In order to breeding new variety of peach with photosynthetic superiority,proper differences between parents should be noticed.
出处
《园艺学报》
CAS
CSCD
北大核心
2011年第1期25-34,共10页
Acta Horticulturae Sinica
基金
江苏省科技基础设施建设计划项目(BM2008008)
国家科技支撑计划项目(2006BAD01A170)
关键词
桃
光合性状
杂种优势
亲子相关
Prunus persica L.
photosynthetic characteristics
heterosis
parents-descendants correlation
