Abstract
Verticillium dahliae is one of the most serious diseases in cotton, which influence the cotton production and quality severely. Now, it is the key research subject of cotton resistance genetics, breeding and plant pathology. In this report, the eight upland cotton parents including four resistant (Changkang cotton, 5173, Hebei Kanghuang and Shandong Kanghuang) and 4 susceptible cultivars (TM-1, Junmian-1, Xinluzao-1 and Ganbing-1) were hybridized in 8×8 half-dialled cross, and were inoculated with Anyang strain with middle virulence, and the main resistant characters including the percentage of susceptible plants and the disease index were investigated. The estimation of the ratio between components of genetic variance and phenotypic variance indicates that the additive effects of both diseases index and disease index of vascular were significant, while the dominant effects were insignificant. The result suggests that the effect selection in the early segregation generation will be better, and continuous selection of the resistant plants is helpful for the improvement of cotton resistance to Verticillium dahliae. Analysis of the heritability shows that narrow sense heritability and broad sense heritability of the disease resistance are significantly different. Covariance analysis also shows that the average disease indexes per plant positively correlate with the vascular disease indexes significantly, but Verticillium wilt negatively correlate with yield character significantly. All these are very helpful to elucidate the effect of Verticillium wilt on the cotton production theoretically. According to our tests, Hebei Kanghuang and Changkang mian are good parents to improve the resistance to Verticillium wilt.
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Claims 7
Claim · model-written summary
Additive effects for disease index and vascular disease index were significant.
- Taxon
- cotton
Gossypium hirsutume1 - Interactor
- Verticillium dahliae
Verticillium dahliaee1pathogen - Outcome
- additive effects of both diseases index and disease index of vasculare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the additive effects of both diseases index and disease index of vascular were significant”
e1“cotton resistance to Verticillium dahliae”
Claim · model-written summary
Dominant effects for disease indexes were insignificant.
- Taxon
- cottonGossypium hirsutume1
- Interactor
- Verticillium dahliaeVerticillium dahliaee1pathogen
- Outcome
- dominant effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dominant effects were insignificant”
e1“cotton resistance to Verticillium dahliae”
Claim · model-written summary
Early generation and continuous selection of resistant cotton plants were proposed to improve resistance.
- Taxon
- cottonGossypium hirsutume0
- Interactor
- Verticillium dahliaeVerticillium dahliaee0pathogen
- Outcome
- continuous selection of the resistant plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect selection in the early segregation generation will be better, and continuous selection of the resistant plants is helpful for the improvement of cotton resistance to Verticillium dahliae”
Claim · model-written summary
Narrow and broad sense heritability of disease resistance differed significantly.
- Taxon
- cottonGossypium hirsutume1
- Interactor
- Verticillium dahliaeVerticillium dahliaee1pathogen
- Outcome
- narrow sense heritability and broad sense heritability of the disease resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“narrow sense heritability and broad sense heritability of the disease resistance are significantly different”
e1“cotton resistance to Verticillium dahliae”
Claim · model-written summary
Average disease index per plant correlated positively with vascular disease index.
- Taxon
- cottonGossypium hirsutume1
- Interactor
- Verticillium dahliaeVerticillium dahliaee1pathogen
- Outcome
- average disease indexes per plante0
- Direction
- positively correlatee0
- Comparator
- vascular disease indexese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average disease indexes per plant positively correlate with the vascular disease indexes significantly”
e1“cotton resistance to Verticillium dahliae”
Claim · model-written summary
Verticillium wilt correlated negatively with yield character.
- Taxon
- cottonGossypium hirsutume1
- Interactor
- Verticillium dahliaeVerticillium dahliaee1pathogen
- Outcome
- yield charactere0
- Direction
- negatively correlatee0
- Comparator
- Verticillium wilte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Verticillium wilt negatively correlate with yield character significantly”
e1“cotton resistance to Verticillium dahliae”
Claim · model-written summary
Hebei Kanghuang and Changkang mian were identified as good resistance breeding parents.
- Taxon
- cottonGossypium hirsutume1
- Material
- Hebei Kanghuang and Changkang miane0
- Interactor
- Verticillium dahliaeVerticillium dahliaee1pathogen
- Outcome
- good parents to improve the resistance to Verticillium wilte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hebei Kanghuang and Changkang mian are good parents to improve the resistance to Verticillium wilt”
e1“cotton resistance to Verticillium dahliae”