Screening of Rice Cultivars with Low Cadmium Accumulation in Longhui County
This study aims to screen out the rice cultivars suitable to be planted in the areas with slight cadmium contamination in Longhui County.With the local indica rice cultivar'Longjing Youdizhan'as the control(CK),three new rice cultivars'Qinglian Simiao','Shaoxiang 100',and'Lianliangyou No.1'with low cadmium accumulation in Longhui County were compared and evaluated regarding the growth period,yield,grain cadmium content,and disease and pest resistance.The results were as follows.(1)The growth periods of three new rice cultivars with low cadmium accumulation were 110-135 d,which meant the three cultivars can be planted as late or middle-season rice for secure rice production in Longhui County.(2)The yields of the new cultivars were 5.8%-72.7%lower than that of CK,and the yield of'Lianliangyou No.1'was only 479.8 kg/hm2 lower than that of CK.(3)The grain cadmium content of the new cultivars varied between 0.042 3 mg/kg and 0.079 9 mg/kg,which were below the requirement(≤0.2 mg/kg)in the national food safety standard.(4)Both the new cultivars and CK demonstrated strong pest and disease resistance.According to the result,the new rice cultivar'Lianliangyou No.1'with low cadmium accumulation is suitable for promotion in the areas with slight cadmium contamination in Longhui County.
NETL
NSTL
万方数据
维普
