Karyotype Analysis of BC_1 and BC_2 Progenies between Sugarcane and Erianthus fulvus

• 作 者: Hongbo LOU Fusheng LI Xianhong WANG Lilian HE Qinghui YANG Shunchang HE
• 机 构: Sugarcane Research Institute,Yunnan Agricultural University,
• 出 处: Agricultural Biotechnology
• 发表日期: 2015年01期
• 关键词: chromosomes Saccharum symmetrical median belongs breeding drought length primiti

In this study,karyotype analysis of F2BC1 progenies between sugarcane( Saccharum spp.) and Erianthus fulvus was conducted. The result showed that most chromosomes of YAU04 /14,YAU09 /02,YAU09 /05,YAU09 /26 and YAU09 /52 are median region( m) chromosomes,while only a small amount of chromosomes are submedian( sm) chromosomes and median point( M) chromosomes. The karyotype formulae of five experimental materials are 2n = 106 = 98 m +8sm,2n = 106 = 2M + 104 m,2n = 106 = 4M + 96 m + 6sm,2n = 102 = 2M + 92 m + 8sm and 2n = 106 = 4M + 96 m + 6sm,respectively. The karyotypes of all materials belong to symmetrical 2B type,indicating that the chromosomes of progenies are primitive.

The result showed that most chromosomes of YAU04 / 14, YAU09 / 02, YAU09 / 05, YAU09 / 26 and YAU09 / 52 are median region (m) chromosomes, while only a small amount of chromosomes are submedian (sm) chromosomes and median point (M) chromosomes. The karyotype formulae of five experimental materials are 2n = 106 = 98m + 8sm, 2n = 106 = 2M + 104 k, 2n = 106 = 4M + 96 m + 6sm, 2n = 102 = 2M + 92m + 8sm and 2n = 106 = 4M + 96m + 6sm, respectively. The karyotypes of all materials belong to symmetrical 2B type, indicating that the chromosomes of progenies are primitive.