The analysis of yield components and simulating high-yield structure indexes for new cotton variety sGK mianxiang 69.

Based on the data of Henan province cotton region test in the two years 2006,2007 and cotton production test in 2007,the methods of partial relation and path analysis were applied to analyze the lint yield of sGK mianxiang 69 and its structural elements.The results showed that this variety,for ensuring high yield cultivation under rational close planting,should strive for more bolls on each plant,increase total bolls and their weight,keep lint percentage.Different yield structure indexes corresponding to different lint yield was simulated to get from the model of yield structure,the simulation result showed that,in scope of 1050-1800kg/ha lint yield,the value of yield components should be as follows:density 34978-44049 plant/ha,per plant bolls 18.02-21.69,boll weight 4.97-6.10g and lint percentage 34.22%-46.35%,respectively.