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| A New Yam Variety —‘Zishiyao No.9’ |
| LIU Yenan1，LIN Feirong2，HE Xianbiao1，HUANG Lifei3*，LIU Weiming4* |
| 1Taizhou Academy of Agricultural Sciences，Taizhou 317000，Zhejiang，China；2Seed Development Center of Huangyan District，Taizhou City，Taizhou 318020，Zhejiang，China；3Crop Research Institute，Guangdong Academy of Agricultural Sciences，Guangdong Provincial Key Laboratory of Crops Genetics and Improvement，Guangzhou 510640，Guangdong，China；4Taizhou Vocational College of Science & Technology，Taizhou 318020，Zhejiang，China |
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Abstract ‘Zishiyao No.9’is a new purple yam variety bred through systematic selection and breeding from a traditional Taizhou City purple yam variety‘Zishiyao’．It is of mid-late maturity．Its growing period is about 180 days．The plant has medium growth vigor．It has 3-6 branches．The single plant rhizome number is 1-2 without bulbils．The rhizome is of cylindrical shape with few fibrous roots．They are about 30 cm in length，about 10 cm in diameter，and about 1.2 kg in weight．Its peel is brown in color，pulp is purple in color，and flesh is rather powdered and little glutinous．Its dry matter content is 269.0 g · kg-1，starch content is 202.0 g ·kg-1，soluble sugar content is 18.0 g · kg-1．In fields，its resistance to anthracnose is stronger than that of the contrast‘Zishiyao’．Generally it can yield 22.50-26.25 t · hm-2，and the highest yield can reach 30 t · hm-2．It is suitable to be planted in Taizhou region，Zhejiang Province．
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Received: 30 December 2021
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