PJB-2016-305
BANANA (MUSA. SPP.) STRAIN ‘HD-1’ APPRAISAL
GAO LONGYAN, LI XINGUO*, LI YUANYUAN, WANG LINGXIA, JIANG XUEFEI, ZHOU SHUANGYUN AND ZENG CHUANSHENG
Abstract
Being one of the important tropical and subtropical fruit trees, banana (Musa.spp.) belongs to the family Musaceae and the order Scitaminae with two genera, Musa and Ensete. In a field survey, research team has discovered a potential banana mutant strain ‘HD-1’ with a sound economic value. The results of the finding are as follows: based on Simmonds’ classification, the pseudostem of banana strain ‘HD-1’ is relatively short and purplish red; its upright outward petiole groove has red edges and wraps its pseudostem loosely. Its ploidy is 3×, AAA type. Karyotype analysis shows that the number of chromosomes is 33, the karyotype formula is 2n=3x=33=2L + 3 M2 + 4 M1 + 2 S, ‘HD-1’ is classified as ‘1B’ type. With the help of ISSR molecular markers, we find thatbanana 'HD-1' has the closest relationship with Pubei and Tianbao dwarf banana; the similarity coefficient is 0.81. In an artificial simulation tests of cold, drought and salt resistance environment changes of physiological and biochemical indexes indicate that ‘HD-1’ exhibits stronger defense capability than Brazil banana. By way of inoculation with injury of root dipping method, we respectively treat two kinds of banana seedlings inoculated Banana Fusarium wilt race 4 small species. The results show that their resistance evaluation scores are 3 and 4, disease levels are ‘susceptible’ and ‘high sensitivity’ respectively. We conclude that ‘HD-1’ has stronger resistance ability toFusarium wilt than Brazil banana.
To Cite this article:
Download
