Clonal variation for shoot ontogenetic heteroblasty in maritime pine (Pinus pinaster Ait.)

被引:12
|
作者
Climent, Jose [1 ,2 ]
Kidelman Dantas, Angelo [3 ]
Alia, Ricardo [1 ,2 ]
Majada, Juan [3 ]
机构
[1] Forest Res Ctr, INIA CIFOR, Madrid 28040, Spain
[2] Sustainable Forest Management Res Inst UVa INIA, Madrid, Spain
[3] La Mata Expt Stn, Forest Sect, SERIDA, Grado 33850, Asturias, Spain
来源
TREES-STRUCTURE AND FUNCTION | 2013年 / 27卷 / 06期
关键词
Development; Genetic correlation; Heritability; Rooting ability; Vegetative phase change; Vegetative propagation; PHASE-CHANGE; EUCALYPTUS-GLOBULUS; BIOMASS ALLOCATION; ROOTING ABILITY; GENETIC-CONTROL; PLANTS; MATURATION; CUTTINGS; CANARIENSIS; JUVENILITY;
D O I
10.1007/s00468-013-0901-1
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Pine seedling shoots undergo sharp heteroblastic changes during the early ontogenetic stages. The rate of these changes has been seen to vary between species and provenances within species, but there is a marked lack of information about its genetic control at the lower hierarchical levels. We used clonal replicates of maritime pine to determine broad-sense heritability of shoot ontogenetic heteroblasty and its correlation to rooting ability. We applied a simple ontogenetic index based on the proportion of basal nodes with secondary needles in rooted cuttings of 15 clones from 9 environmentally contrasting origins. We found a high clonal heritability for shoot ontogenetic index and a moderately high heritability for rooting ability, but both genetic and phenotypic correlations between these two traits were weak and non-significant. These results indicate that both developmental phenomena are genetically controlled, but not strictly associated in this species.
引用
收藏
页码:1813 / 1819
页数:7
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