Early Maturity Identification and Selection of Sweet-potato Varieties（Strains） with Good Edible Quality
[Objective]Early maturity of the 15 sweet potato varieties with good edible quality were identified and select,which aimed to provide some varieties with early maturity for productions.[Method]As major foundations,yields of root,the rooting characters and root quality after 100 days growth in field were identified and select.[Result]Pushu 32 were with highest yield,the yields of fresh root,dry root and starch,which were 17.3%,13.0%and 11.8%higher than CK respectively.Most varieties(strain)had roots after 30 days growth in field,and had good rooting characters,such as shallow rooting,central rooting,neat root and high rate of commodity root after 100 days growth in field.The rates of commodity root of Pushu 12 and Fushu 604 were 90.6%and 89.4%respectively,higher than CK.Except for Quanshu 2 and Hunanbai,other varieties(strain)had good external appearance,and had not distinct faultiness.The comprehensive edible qualities of 4 varieties(Quan 20611,Quanshu 29,Pushu 32 and Hunanbai)were better than CK.[Conclusion]The 4 varieties(Pushu 32,Quanshu 29 and Fushu 604)all had some superior characters,such as high yield,early maturity,central rooting,neat root,good external appearance and good edible quality,they should be suitable for application as early maturity varieties(Strains)with good edible quality.Quan 20611 had high fresh root yield,good external appearance and edible quality,should be suitable for further investigation.Other varieties(Strains)had poor comprehensive performance.
Sweet potatoGood qualityEarly maturityYieldIdentification and selection
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