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草业学报 ›› 2015, Vol. 24 ›› Issue (4): 157-163.DOI: 10.11686/cyxb20150419

• 研究论文 • 上一篇    下一篇

新型饲草玉淇淋58的性状、遗传及饲草潜力

李华雄1,2,程明军1,苏月贵1,3,李志龙1,4,蒋维明1,张红芬5,郑名敏1,
荣廷昭1,周树峰1,吴元奇1,曹墨菊1,唐祈林1*   

  1. 1.四川农业大学玉米研究所,四川 温江611130;
    2.内江市农业科学院,四川 内江 641000;
    3.广西农业科学院,广西 南宁 530007;
    4.宜宾市农业科学院,四川 宜宾644000;
    5.石林县长湖镇农业综合服务中心,云南 昆明 652203
  • 收稿日期:2014-03-17 修回日期:2014-05-15 出版日期:2015-04-20 发布日期:2015-04-20
  • 通讯作者: 唐祈林,E-mail:tangqilin71@163.com
  • 作者简介:李华雄(1980-),男,四川合江人,在读博士。E-mail:498513867@qq.com
  • 基金资助:
    973项目(2014CB13870),国家自然科学基金项目(31371640)和四川省饲草育种攻关项目资助。

Chromosomal composition and forage production potential of Yuqilin 58

LI Hua-Xiong1,2, CHENG Ming-Jun1, SU Yue-Gui1,3, LI Zhi-Long1,4, JIANG Wei-Ming1, ZHANG Hong-Fen5, ZHENG Ming-Min1, RONG Ting-Zhao1, ZHOU Shu-Feng1, WU Yuan-Qi1, CAO Mo-Ju1, TANG Qi-Lin1*   

  1. 1.Maize Research Institute, Sichuan Agriculture University, Wenjiang 611130, China;
    2.Neijiang Academy of Agricultural Sciences, Neijiang 641000, China;
    3.Guangxi Academy of Agricultural Sciences, Nanning 530007, China;
    4.Yibin Academy of Agricultural Sciences, Yibin 644000, China;
    5.The Comprehensive Agricultural Service Center of Changhu Town in Shilin County, Kunming 652203, China
  • Received:2014-03-17 Revised:2014-05-15 Online:2015-04-20 Published:2015-04-20

摘要: 多色基因组原位杂交(multi-color genomic in situ hybridization, McGISH)鉴定结果表明, MTPP-58有58条染色体,其中11条染色体来自玉米,28条染色体来自四倍体多年生大刍草,17条染色体来自指状摩擦禾和2条玉米与四倍体多年生大刍草易位的染色体。2012-2013年对MTPP-58的饲草产量、品质、越冬率以及繁殖特性研究表明,第1年鲜、干草产量分别为93.845 t/hm2和22.083 t/hm2,第2年鲜、干草产量分别为82.851 t/hm2和14.394 t/hm2;粗蛋白(CP)为10.48%,干茎叶比为0.71,越冬率为100%。MTPP-58下部茎干扦插成活率为51.69%,分株成活率为95.50%。多种属聚合远缘杂交创制的MTPP-58聚合了玉米、大刍草、摩擦禾的优良特性,植株根系发达,生长繁茂,分蘖和抗寒性强,生产性能优,可无性繁殖,是一种多种属间杂交创制的新型多年生饲草。

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.