Analysis on Correlation between Leaf SPAD Value and Chlorophyll Content of Squash
To investigate the correlation between leaf SPAD value and chlorophyll content of squash,leaf SPAD value and chlorophyll content were determined by SPAD chlorophyll meter and alcohol-acetone extraction respectively.Results showed that there was extremely significant correlation among chlorophyll a,chlorophyll b and total chlorophyll content and SPAD value in the four squash varieties.In terms of the correlation between SPA D and chlorophyll a,the optimal mathematical model for‘ Banli summer squash’,‘Shengyu 306’,‘Fengkangzao’,and‘Xiangjiao summer squash’was y =0.8252 ea0109x (r =0.8057**),y =0.2719 ea0.034x(r =0.8854**),y =0.6186 e0.0173x (0.7831 **),y =0.9181 ln (x)-2.1481 (r =0.7901 **).In terms of the correlation between SPA D and chlorophyll b,the optimal mathematical model for‘Banli summer squash’,‘Shengyu 306’,‘Fengkangzao’,and ‘Xiangjiao summer squash’was y=0.6069 e0.0081x (r=0.7845**),y=0.6069 ea0081x(r=0.6473**),y=0.4712 eam29x (r=0.7868**),y=0.7384 ln(x)-1.8869 (r=0.8357**).In terms of the correlation of SPAD value and chlorophyll content of total,the optimal mathematical model for ‘Banli summer squash’,‘ Shengyu 306’,‘Fengkangzao’,and ‘Xiangjiao summer squash’was y=1.4989ea oo9 x (r=0.8095**),y=0.5225 e0.0390309x(r=0.8200**),y=1.0843ea0156x(r=0.7989**),y=1.6565ln(x)-4.0349 (r=0.8154*).
NETL
NSTL
万方数据
维普
