Collection and Double-variable Analysis of Germplasm Characteristics of Dwarf Original Banana in Hekou
The resources of dwarf bananan originated in Hekou were collected locally,from which 4 natural bud mutants were selected for analysis and evaluation of their 24 agronomic characteristics.The results showed that the 4 mutants had less variation of agronomic characteristics generally,indicating their high stability in heredity.The plant height was 1.86～2.00 m,stem girth 51～53 cm at the height of 1 m from the ground,fruit fingers per cluster 18.83～19.14,length of fruit fingers 22.29～23.78 cm,camber of fruit fingers 0.41～0.44,yield per plant(net weight)31.15～32.5 kg and solid content 19～20.These characteristics showed that this banana was dwarf,fastgrowing, productive and high-quality.There is no significant difference in plant morphological characteristics among the mutants.The fruit characteristics,especially the fruit quality,were considerably stable.The fruit yield was increased along with the increment of the stem girth.The solid content was high when the plant had wider leaves.The bunch quality was reduced when the leaf petiole was too long..These studies may a have guiding significance for improvement and innovative use of banana germplasm resources.