title: Genetic and heterosis analysis for important agronomic traits of Chinese vegetable mustard (Brassica juncea) in different environments.
abstract: Genetic effects and genotype by environment (GE) interaction effects for some important agronomic traits of Chinese vegetable mustard were analyzed by using a genetic model including additive, dominance, additive x additive effects and their interaction effects with the environment. Four variations of Chinese vegetable mustard as parental lines and their F(1s), F(2s) were evaluated in two locations. It was revealed that the agronomic traits of Chinese vegetable mustard were mainly controlled by genetic effects except plant weight (PW) and leaf weight (LW) were observed to be more affected by GE interaction effects. Among the genetic effects, additive effects took the main proportion for tiller number (TN), leaf number (LN), leaf breadth (LB) and LW; dominance effects were the main components of PW, leaf length (LL), root weight (RW) and plant height (PH); additive x additive effects were the main components of plant breadth (PB). Among the GE interaction effects, additive x environment interaction effects mainly affected LB, LW and RW, while PW, LL, PH and PB were mainly controlled by dominance x environment interaction effects. Besides, additive x additive x environment interaction was the main factor, which controlled TN and LN of Chinese vegetable mustard. For heterosis analyses, TN, LN, LB and LW of Chinese vegetable mustard showed positive H(PM) and negative H(PB). The other traits showed positive H(PM) and H(PB). Heterosis arising from GE interaction was found to varying degree for different environments. It was shown that genetic heterosis and GE interaction effects were important factors for agronomic traits in Chinese vegetable mustard.
authors.affiliation: Laboratory of Genetic Resources and Functional Improvement for Horticultural Plant, Department of Horticultural Science, Zhejiang University, Hangzhou 310029, People's Republic of China. xiaohuasea@126.com
authors.forename: Xiao-Hua
authors.initials: XH
authors.lastname: Qi
authors.forename: Jing-Hua
authors.initials: JH
authors.lastname: Yang
authors.forename: Jing-Quan
authors.initials: JQ
authors.lastname: Yu
authors.forename: Ming-Fang
authors.initials: MF
authors.lastname: Zhang
mesh_terms: D002681:China; D003433:Crosses, Genetic; D004777:Environment; D014644:Genetic Variation; D006823:Hybrid Vigor / Q000235:genetics*; D009149:Mustard Plant / Q000235:genetics*; D014675:Vegetables / Q000235:genetics
references.citation: Theor Appl Genet. 1990 Feb;79(2):241-50
references.pmid: 24226225
references.citation: Theor Appl Genet. 1994 Oct;89(2-3):153-9
references.pmid: 24177822
references.citation: Genetics. 1992 Nov;132(3):823-39
references.pmid: 1468633
references.citation: Heredity (Edinb). 1999 May;82 ( Pt 5):510-7
references.pmid: 10383671
references.citation: Theor Appl Genet. 1982 Dec;63(4):373-80
references.pmid: 24270875
references.citation: Theor Appl Genet. 1973 Jan;43(7):311-8
references.pmid: 24425231
references.citation: Theor Appl Genet. 2004 Aug;109(4):792-9
references.pmid: 15340689
references.citation: Theor Appl Genet. 1996 Jan;92(1):1-9
references.pmid: 24166109