Breeding of Quanshu No.9,a new high quality sweetpotato with multiple disease-resistances and a high starch content
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摘要: 泉薯9号是福建省泉州市农业科学研究所于2003年以泉薯268为母本放任授粉选育而成的。该品种丰产性好,薯干和淀粉产量表现尤其突出,薯干产量在8.50~14.93 t·hm-2,为对照的104.20%~152.30%;淀粉产量在5.62~9.85 t·hm-2,为对照的107.91%~155.36%;薯块干物率和出粉率分别为30.5%和20.5%,比对照高3.5~4.0个百分点;蒸熟食用,质地细腻,味道香甜,优于金山57,相当于南薯88;商品外观显著好于对照;中抗甘薯蔓割病、薯瘟Ⅱ型菌和黑斑病,高抗茎线虫病;薯块耐贮性和萌芽性均较好。该品种适于鲜薯食用和淀粉加工,于2009年初通过福建省农作物品种审定,2009年在福建省累计示范推广约3000 hm2,在南方薯区和长流域将具有广阔的应用前景。Abstract: Breeding and main characteristics of Quanshu No.9,a new sweetpotato variety,are preliminarily presented in this report in order to provide references for its potential production and breeding applications.Quanshu No.9 was bred from the female parent,Quanshu 268,by open-pollination by Quanzhou Institute of Agricultural Science in 2003.Its innovative and successful breeding method of using middle-materials as parents of composite hybridization through single cross,group cross or open-pollination was effective for sweetpotato breeding.Trials at multiple-spots in different years showed that Quanshu No.9 had a high yield,and its dry root and starch were especially high and stable.The annual yield of the dry root was between 8.50 and 14.93 t·hm-2,being 104.20% to 152.30% of those of the reference varieties.The annual yield of starch was between 5.62 and 9.85 t.hm-2,being 107.91 to 155.36% of those of the reference varieties.The annual yield of starch was between 6.43 and 9.85 t·hm-2,being 109.75% to 155.36% of those of the reference varieties.The dry matter and starch contents of the fresh root was about 30.05% and 20.5%,respectively,i.e.,3.5%-4.0% higher than those of the reference varieties.The edible and sensory quality of the sweetpotatoes was better than that of Jinshang 57,and equivalent to that of Nanshu 88.Its external appearance was better than the reference varieties’.This variety was resistant to fusarium wilt,bacterial wilt,black spot,and stem nematode.And,among other superior characteristics,it had desirable storage performance and germinating ability.Quanshu No.9 was suitable for either fresh-eating or starch-processing.It was examined and approved by the Crop Variety Approval Committee of Fujian Province.Its acreage in Fujian was about 3000 hm2 in 2009,and the prospect for large production appeared to be bright in Southern and Middle China,as well as,the Lower Reaches of Yangtze River.
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Key words:
- sweetpotato /
- Quanshu No.9 /
- hybridization /
- hybrid parent /
- characteristics
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