Multi-point Screening and Identification of Edible Cassava Varieties

LI Hua-li

doi:10.13651/j.cnki.fjnykj.2023.11.010

Abstract：In order to screen out the new varieties of edible cassava suitable for being planted in central and southern Fujian,the six new varieties of edible cassava,including Guire 561,Guire No.10 and GC49,were introduced in re-cent years by Sanming Comprehensive Experimental Station of National Cassava Industry Technology System in2022.And then,the screening experiments were carried out in the demonstration counties of Datian,Yong an and Yong-chun.By taking Huanan No.9 as the control group,the main characteristics of plants,quality and starch yield in Da-tian,fresh sweet potato yield of each variety were comprehensively analyzed.The results showed that:the mean yieldof Guire 561 ranked the first,which was 36 769.0 kg·hm-2,an increase of 30.7％,and the difference was statisti-cally significant.The starch content of fresh sweet potato was 32.0％,and the starch yield was 9 335.8 kg·hm-2,which was 46.50％higher than that of the control group.The dry matter rate was 42.3％,and the cyanide content was 22.0 mg·kg-1.the yield of Guire 10 ranked the second,which was 36 658.3 kg·hm-2,an increase of 30.3％The starch content of fresh sweet potato was 31.0％,and the starch yield was 9430.0 kg·hm-2,which was 48.0％higher than that of the control group.The dry matter rate was 41.5％,and the cyanide content was 22.0 mg·kg-1.The above two varieties had outstanding comprehensive characteristics with good taste quality,so they were recom-mended to expand the demonstration and application as the starch processing-type or edible-type varieties.The mean yield of GC49 and Huanan 6068 ranked third and fourth,with an increase of 15.0％and 5.4％.The the cyanide con-tent was low,and the taste quality was good.It was suggested to continue the test and expand the demonstration and application as the edible-type varieties.The fresh yield of Shatian was little higher then that of the control group,but the taste quality was middle level,and the mean yield of TCGRI 31 was low,so it was not recommended to continue the experiment.The yield of Huanan No.9 was general,but the color of potato meat was yellow,and the market pro-motion and application value was high.So it was recommended to continue to expand the demonstration and applica-tion as an edible-type variety.