QTL analysis of photosynthesis and water status traits in sunflower (Helianthus annuus L.) under greenhouse conditions
QTL analysis of photosynthesis and water status traits in sunflower (Helianthus annuus L.) under greenhouse conditions
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DOI：
10.1093/jexbot/52.362.1857
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发表时间：
2001-09-01
影响因子：
6.9
通讯作者：
Gentzbittel, L
中科院分区：
文献类型：
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作者：
Hervé, D;Fabre, F;Gentzbittel, L
对向日葵几个生理性状的QTL定位进行了研究。在温室条件下，在重组自交系的人口光合作用（叶绿素浓度，净光合作用和内部CO2浓度）和水分状况（气孔导度，蒸腾，黎明前叶水势，相对含水量）的相关性状进行了评估。狭义遗传力低至平均水平。利用AFLP分子标记图谱，共检测到19个QTL，每个QTL的表型变异解释率为8.8-62.9%。其中，两个主要的净光合作用QTL被确定在连锁群IX上。一个QTL共定位在连锁群VIII气孔运动和水分状况。控制光合作用、蒸腾作用和叶水势的QTL在连锁群XIV上定位一致。这些结果导致第一次描述的组织基因组区域相关的向日葵产量。
The identification of QTL for several physiological traits in sunflower is described. Traits related to photosynthesis (leaf chlorophyll concentration, net photosynthesis and internal CO2 concentration) and water status (stomatal conductance, transpiration, predawn leaf water potential, and relative water content) were evaluated in a population of recombinant inbred lines under greenhouse conditions. Narrow-sense heritabilities were low to average. Using an AFLP linkage map, 19 QTL were detected explaining 8.8-62.9% of the phenotypic variance for each trait. Among these, two major QTL for net photosynthesis were identified on linkage group IX. One QTL co-location was found on linkage group VIII for stomatal movements and water status. Coincident locations for QTL regulating photosynthesis, transpiration and leaf water potential were described on linkage group XIV. These results lead to the first description of the organization of genomic regions related to yield in sunflower.