title: Dominant gene cpls(r)1 corresponding to premature leaf senescence resistance in cotton (Gossypium hirsutum L.).
abstract: Cotton (Gossypium hirsutum L.) premature leaf senescence-resistant inbred XLZ33 and senescence-susceptible inbred lines XLZ13 were selected and crossed to produce F(1), F(1)-reciprocal, F(2) and BC(1) generations for evaluation of leaf senescence process and inheritance. The results showed that leaf senescence processes for XLZ13 and XLZ33 were obviously different and leaf senescence traits could be distinguished between the two parents at particular periods of cotton growth. Inheritance anlysis for the cotton premature leaf senescence resistant trait further showed that the segregation in the F(2) fit a 3:1 ratio inheritance pattern, with resistance being dominant. The backcross of F(1) to the susceptible parent produced a 1:1 ratio, confirming that cotton premature leaf senescence resistant trait was from a single gene. The single dominant gene controlling cotton premature leaf senescence resistance in XLZ33 was named as cotton premature leaf senescence resistance 1, with the symbol cpls(r)1.
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
authors.forename: Jingqing
authors.initials: J
authors.lastname: Zhao
authors.forename: Tengfei
authors.initials: T
authors.lastname: Jiang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Liu
authors.forename: Wenwei
authors.initials: W
authors.lastname: Zhang
authors.forename: Guiliang
authors.initials: G
authors.lastname: Jian
authors.forename: Fangjun
authors.initials: F
authors.lastname: Qi
mesh_terms: D005799:Genes, Dominant; D017343:Genes, Plant; D003368:Gossypium / Q000235:genetics*; D018515:Plant Leaves / Q000502:physiology*