Abstract: Phenotype performance,variance and correlation of more than 20 agronomic and economic characters oF ₄ varietal populations with fruit branch type 0,Ⅰ,Ⅱ,Ⅲ were analy zed in 1993—1994.The results showed that the second internode length of the fifth and sixth branch was a better response to fruit branch type.Agronomic and economic characters of tight plant types,especially limited fruit branch populations had more variation which could bring out more potentiality for hybrid breeding and genetic selection.Internode length,the first node of fruit branch,fruit branch length,leaf thickness,cotton boll weight,2.5% span length significantly related to fruit branch types.The characters of fruit branch type 0,Ⅰwere futher discussed and provided more desirable type 0,Ⅰ germplasm.

Key words: Upland cotton, Fruit branch type, Plant density, Correlation

CLC Number: 

• S562