干旱区生态环境知识资源中心(Arid): Variation and Genetic Parameters of Leaf Morphological Traits of Eight Families from Populus simonii x P. nigra

Arid

DOI	10.3390/f11121319
	Variation and Genetic Parameters of Leaf Morphological Traits of Eight Families from Populus simonii x P. nigra
	Ren, Jingshan; Ji, Xinyue; Wang, Changhai; Hu, Jianjun; Nervo, Giuseppe; Li, Jinhua
通讯作者	Li, JH (corresponding author), Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat Natl Forestry &, State Key Lab Forest Genet & Tree Breeding, Beijing 100091, Peoples R China.
来源期刊	FORESTS
EISSN	1999-4907
出版年	2020
卷号	11 期号:12
英文摘要	Leaf morphology in Populus L. varies extensively among sections, species and clones under strong genetic control. P. nigra L. (section Aigeiros), with large and triangular leaves, is a commercial forest tree of economic importance for fast growth and high yield in Europe. P. simonii Carr. (section Tacamahaca) with small land rhomboid ovate leaves performs cold and dry resistance/tolerance in the semi-arid region of Northern China. Leaf morphological traits could be used as early indicators to improve the efficiency of selection. In order to investigate the genetic variation pattern of leaf morphology traits, estimate breeding values (combining ability), as well as evaluate crossing combinations of parents, 1872 intersectional progenies from eight families (P. simonii x P. nigra) and their parents were planted with cuttings for the clonal replicate field trial in Northern China. Four leaf size traits (area, perimeter, length, width) and roundness were measured with leaf samples from the 1-year-old clonal plantation. Significant differences regarding leaf traits were found between and among three female clones of P. simonii from Inner Mongolia, China and six male clones of P. nigra from Casale Monferrato, Italy. The genetic variation coefficient, heritability and genetic variance component of most traits in male parents were greater than these of female parents. Heritability estimates of male and female parents were above 0.56 and 0.17, respectively. Plentiful leaf variations with normal and continuous distributions exited in the hybrid progenies among and within families with the genetic variation coefficient and heritability above 28.49 and 0.24, respectively. Heritability estimates showed that leaf area was the most heritable trait, followed by leaf width. The breeding value ranking of parents allowed us to select the parental clones for new crosses and extend the mating design. Two male parental clones (N430 and N429) had greater breeding values (general combining ability, GCA) of leaf size traits than other clones. The special combining ability (SCA) of the crossing combination between P. simonii cl. ZL-3 and P. nigra cl. N430 was greater than that of others. Eight putatively superior genotypes, most combined with the female parental clone ZL-3, can be selected for future testing under near-commercial conditions. Significant genetic and phenotypic correlations were found between five leaf morphology traits with the coefficients above 0.9, except for leaf roundness. The results showed that leaf morphology traits were under strong genetic control and the parental clones with high GCA and SCA effects could be utilized in heterosis breeding, which will provide a starting point for devising a new selection strategy of parents and progenies.
英文关键词	Populus simonii x P. nigra leaf morphology traits breeding values genetic variation cross combination heterosis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000602165200001
WOS关键词	SHORT-ROTATION COPPICE ; CARBON-ISOTOPE DISCRIMINATION ; GENOMIC BREEDING VALUES ; COMBINING ABILITY ; PHYSIOLOGICAL TRAITS ; BLACK POPLAR ; PRODUCTIVITY ; SELECTION ; BIOMASS ; GROWTH
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348851
作者单位	[Ren, Jingshan; Ji, Xinyue; Wang, Changhai; Hu, Jianjun; Li, Jinhua] Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat Natl Forestry &, State Key Lab Forest Genet & Tree Breeding, Beijing 100091, Peoples R China; [Nervo, Giuseppe] CREA Ctr Ric Foreste & Legno, Str Frassineto 35, I-15033 Casale Monferrato, Italy
推荐引用方式 GB/T 7714	Ren, Jingshan,Ji, Xinyue,Wang, Changhai,et al. Variation and Genetic Parameters of Leaf Morphological Traits of Eight Families from Populus simonii x P. nigra[J],2020,11(12).
APA	Ren, Jingshan,Ji, Xinyue,Wang, Changhai,Hu, Jianjun,Nervo, Giuseppe,&Li, Jinhua.(2020).Variation and Genetic Parameters of Leaf Morphological Traits of Eight Families from Populus simonii x P. nigra.FORESTS,11(12).
MLA	Ren, Jingshan,et al."Variation and Genetic Parameters of Leaf Morphological Traits of Eight Families from Populus simonii x P. nigra".FORESTS 11.12(2020).