期刊
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
卷 18, 期 1, 页码 29-38出版社
TAYLOR & FRANCIS AS
DOI: 10.1080/02827581.2003.10383135
关键词
frost tolerance; genetic mapping; QTL; quantitative trait loci; Scots pine
类别
The main objective of this study was to identify quantitative trait loci (QTLs) involved in the genetic control of growth rhythm and autumn cold acclimation in Pinus sylvestris L. Eighteen full-sib families of P. sylvestris with parental origins between latitudes 62 and 67degrees N in Sweden were assessed for autumn cold acclimation (frost injury measured from artificial freeze testing) and growth rhythm during the first two growing seasons. One family north x south with 108 individuals was used for the construction of one linkage map for the male and one for the female parent using 286 markers from random amplification of polymorphic DNA. Marker trait associations (QTLs) for shoot elongation, growth cessation and cold acclimation were found on both maps. Some QTLs were verified in two additional north x south families. Proportions of the additive genetic variance explained by the markers (R-G(2)) indicated that genetic factors of large effect were involved in all investigated traits. Single or multiple markers accounted for between 16 and 47% of the additive variance in annual shoot elongation, between 42 and 79% of the additive variance in growth termination, and between 7 and 31% of the additive variation in autumn cold acclimation. The study confirms that there are major QTL regions on different linkage groups controlling a large part of the variation for growth rhythm and autumn cold acclimation in P. sylvestris.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据