Chromosomal composition and forage production potential of Yuqilin 58

doi:10.11686/cyxb20150419

Abstract

Abstract: Multi-color genomic in situ hybridization (McGISH) was employed to identify the chromosomal composition of Yuqilin 58 (MTPP-58), derived from the tri-generic hybridization of Zea mays, Zea perennis and Tripsacum dactyloides. GISH (Genomic in situ hybridization) showed that MTPP-58 is an aneuploid with 58 chromosomes; 11, 28 and 17 chromosomes came from Z. mays, Z. perennis and T. dactyloides respectively. Translocation of chromosomes between Z. mays and Z. perennis accounted for the balance. Assessment of forage yield, forage quality, over wintering rate and reproductive characteristics showed that the fresh and dry hay yield of MTPP-58 were 93.845 t/ha and 22.083 t/ha respectively, in the first year, and 82.851 t/ha and 14.394 t/ha respectively, in the second year. The crude protein content of the forage was 10.48% with a leaf/stem ratio of 0.71. Winter survival rate was 100%. MTPP-58 displayed a number of desirable characteristics including good growth, a well-developed root system, good tillering ability and good reproductive potential suggesting it has good potential for ongoing development.

LI Hua-Xiong, CHENG Ming-Jun, SU Yue-Gui, LI Zhi-Long, JIANG Wei-Ming, ZHANG Hong-Fen, ZHENG Ming-Min, RONG Ting-Zhao, ZHOU Shu-Feng, WU Yuan-Qi, CAO Mo-Ju, TANG Qi-Lin. Chromosomal composition and forage production potential of Yuqilin 58[J]. Acta Prataculturae Sinica, 2015, 24(4): 157-163.

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