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Breeding, introgression and inheritance of delayed gland morphogenesis trait from Gosspium bickii into upland cotton germplasm

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Chinese Science Bulletin 2004年第23期49卷 2470-2476页

作者： Reddy Naganagouda College of Agriculture and Biotechnology Zhejiang University Hang- zhou 310029 China

A tri-specific hybrid with delayed pigment gland morphogenesis was obtained by crossing the amphi- diploid of (G. arboreum×G. bickii) F1 and an upland cotton germplasm with pigment gland genotype of Gl2Gl2gl3gl3. The tri-specific hybrid was a typical interspecific hybrid with high sterile, and the chromosome configuration at meiosis MI of PMC was 2n = 52 = 41.04Ⅰ+ 4.54Ⅱ + 0.57Ⅲ + 0.04. The crossover value of bivalent was 1.19. Two fertile plants with objective character were obtained in BC8 population by continuously backcrossing with Gl2Gl2gl3gl3 as recurrent parent to the tri-specific hybrid, and a new upland cotton germplasm, named ABH-0318, with delayed pigment gland morphogenesis trait was developed through selfing and screening. The pigment gland trait of ABH-0318 was stable, and there were almost no pigment glands observed in the dormant seeds, although there were a few pigment glands confined to cotyledon edges, and the gossypol content in the dormant seeds was 0.017% only, being a typical low gossypol cotton type. However, a large quantity of pigment glands emerged in cotyledons and other main organs of plant after seed germination, and the gossypol contents in the upper parts of the plant were similar to that of ordinary glanded cotton types. Genetic analysis demonstrated that the delayed pigment gland morphogenesis trait of this germplasm was controlled by the interaction of the genes located in two pig- ment gland loci, Gl2 and Gl3. Among them, the gene located in locus of Gl2, derived from ***, was dominance to up- land cotton pigment gland alleles, Gl2 and gl2 , but was reces- sive epistatic to another glanded gene Gl3, which was named Gl2 temporarily. While the gene located in the locus of Gl3 b was a recessive gene come from upland cotton.

关键词：基因渗入现象 Gosspium bickii 陆地棉色素腺棉子酚种间杂种

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New red flower germplasm lines of cotton selected from hybrid of Gossypium hirsutum × G. bickii

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Science China(Life Sciences) 1997年第3期40卷 284-292页

作者：梁正兰姜茹琴钟文南 Institute of Genetics Chinese Academy of Sciences Beijing 100101 China

By means of dropping GA3 (50 ppm) and NAA (40 ppm) on the hybrid boll-embryo culture in vitro, one F1 plant of G. hirsutum G. bickii was obtained; when F1 branches were grafted on upland cotton and then back-crossed with upland cotton under short-day and cooler-night condition, some BC1 seeds could be harvested. The characteristic segregation was very violent in early generation. Through 3 times of back-crossing and selecting, ten stable hybrid lines with the character of both male parent (viz. red petal-purple spot and strong fibre) and female par-ent (plant type, earliness, white fibre, lint length, etc. ) were established. These lines were assigned as HB red flow-er lines (HBRL). Transference of character of G. bickii to upland cotton was proved to be successful for the first time. These new germplasms may play an important role in both the genetic research and new cotton variety breeding.

关键词： Gossypium hirsutum × G. bickii interspecific hybridization.

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STUDY ON THE INTERSPECIFIC HYBRID OF Gossypium hirsutum×G. bickii AND G. herbaceum×G. bickii

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Chinese Science Bulletin 1985年第8期30卷 1095-1101页

作者：梁正兰姜茹琴钟文南 Institute of Genetics Academia Sinica Beijing

G. bickii an Australian wild species which belongs to G1 genome. It has many desirable charaeteristics, such as resistance to insects （due to its intense hairiness）, high gossypol stalk and gossypol-free seed, very useful for cotton breeding. However, due to difficulty of interspecific hybridization, transference of these characteristics has not yet been reported.

关键词： bickii AND G Gossypium herbaceum cotton breeding interspecific Australian belongs difficulty parents

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