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Dominant Gene cplsr1 Corresponding to Premature Leaf Senescence Resistance in Cotton (Gossypium hirsutum L.)F
Article first published online: 9 JUL 2012
© 2012 Institute of Botany, Chinese Academy of Sciences
Journal of Integrative Plant Biology
Special Issue: Leaf Senescence
Volume 54, Issue 8, pages 577–583, August 2012
How to Cite
Zhao, J., Jiang, T., Liu, Z., Zhang, W., Jian, G. and Qi, F. (2012), Dominant Gene cplsr1 Corresponding to Premature Leaf Senescence Resistance in Cotton (Gossypium hirsutum L.). Journal of Integrative Plant Biology, 54: 577–583. doi: 10.1111/j.1744-7909.2012.01127.x
- Issue published online: 23 AUG 2012
- Article first published online: 9 JUL 2012
- Accepted manuscript online: 11 MAY 2012 06:20AM EST
- Received 6 Mar. 2012 Accepted 8 May 2012
- premature leaf senscence;
- dominant gene;
Cotton (Gossypium hirsutum L.) premature leaf senescence-resistant inbred XLZ33 and senescence-susceptible inbred lines XLZ13 were selected and crossed to produce F1, F1-reciprocal, F2 and BC1 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 F2 fit a 3:1 ratio inheritance pattern, with resistance being dominant. The backcross of F1 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 cplsr1.