Provenance hybridization in a diallel mating scheme of maritime pine (Pinus pinaster). II. Heterosis
Provenance hybridization in a diallel mating scheme of maritime pine (Pinus pinaster). II. Heterosis
复制标题
海松（Pinus pinaster）双列交配方案中的种源杂交。
DOI：
10.1139/cjfr-30-1-10
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发表时间：
2000
影响因子：
2.2
通讯作者：
A. Kremer
中科院分区：
文献类型：
--
作者：
A. Harfouche;N. Bahrman;P. Baradat;J. Guyon;R. Petit;A. Kremer
海松 (Pinus pinaster Ait.) 是一种自然分布范围不连续的物种，其种群规模通常较小，生长在异质环境中。使用双列杂交方案对属于该物种三个生物系统群（大西洋、地中海和北非）的十个起源进行杂交。在法国西南部的一项试验中，对亲本种源及其杂交种在 1、2、3、8 和 13 岁时进行了测试和测量身高生长，以及抗虫性和茎弯曲度。结果显示，身高增长的杂种优势方差随着年龄的增长而减小。杂种优势以杂种相对中亲本的相对优势衡量，1岁时为-10%至42%，13岁时为2%至20%。杂种优势的平均值没有年龄影响，1岁时为9.7%，13岁时为8.4%。然后将杂种优势值与用各种性状和标记（表型性状，...
Maritime pine (Pinus pinaster Ait.) is a species characterized by a discontinuous natural range with populations as a rule of small size and growing in heterogeneous environments. Ten provenances belonging to the three biosystematic groups of the species (Atlantic, Mediterranean, and North African) were crossed using a diallel scheme. Parental provenances and their hybrids were tested and measured for height growth at age 1, 2, 3, 8 and 13, as well as for insect resistance and stem crookedness in a trial in southwestern France. The results show a decrease in the variance of heterosis for height growth with age. Heterosis measured as the relative superiority of the hybrid to the midparent varies from -10% to 42% at age 1 and between 2 and 20% at age 13. There is no age effect on the mean value of heterosis, which amounts to 9.7% at age 1 and 8.4% at age 13. The value of heterosis was then compared with the genetic distance of parental provenances measured with various traits and markers (phenotypic traits,...