【摘要】 【目的】选育优质抗病鲜食型甘薯新品种。【方法】选用杂交不亲和88-70群、广适、抗病、优质高产品种广薯87作母本,以杂交不亲和D群、食用品质优、高胡萝卜素的品种广薯79作父本,定向组配杂交组合,经过实生苗选种后,开展复选、品比和广东省区域试验,进行适应性及抗病性鉴定评价。【结果】选育出新品种广薯72,在省区试中,平均每667 m~2鲜、干薯产量分别为2 350.0、672.9 kg,比对照种广薯111增产21.6%和24.4%,增产均达极显著水平;薯块干物率为28.7%,淀粉含量为19.7%,鲜薯胡萝卜素含量达81 mg/kg,蒸熟食用粉香甜、薯味浓,口感好,食味80～85分;大田薯瘟抗性鉴定为中抗,室内薯瘟病抗性鉴定为抗病。【结论】广薯72为富含胡萝卜素的鲜食型特色甘薯品种,优质、高产、适应性广,商品价值突出、适口性好,有利于促进甘薯生产,提高甘薯种植的社会经济效益。2016年通过广东省农作物品种审定。更多还原

【Abstract】 【Objective】The experiment is to breed a new variety of fresh-eating sweet potato with high quality and disease resistance.【Method】As the female parent,Guangshu 87,a variety with cross-incompatibility group of 88-70,broad adaptation,disease resistance and high yield,and as the male parent,Guangshu 79,a variety with cross incompatibility group of D,good edible quality and high carotene,were selected for directional hybridization,then seeding and selecting the lines,which were subjected to a reselection test,a comparison test,and a regional test in Guangdong to evaluate the adaptability and the disease resistance identification.【Result】The new sweet potato variety"Guangshu 72"was bred.In provincial multi-location adaptability test,there was an average yield of fresh root and dry root of 2 350.0 kg and 672.9 kg per 667 m~2,which was 21.6% and 24.4% higher than that of the control variety Guangshu 111,respectively,both reaching an extremely significant level.The dry matter rate and starch content of the root were 28.7% and 19.7%,respectively.The carotene content of fresh root was 81 mg/kg.The steamed root was powdery and sweet,with good taste and a taste value of 80-85 scores.The resistance to bacterial wilt of field test was identified as medium resistance,and that of indoor test was identified as resistance.【Conclusion】The special fresh-eating sweet potato variety Guangshu 72 is characterized with high quality,high yield,wide adaptability,outstanding commodity value and good palatability,which is conducive to promoting the production of sweet potato and improving the social and economic benefits of sweet potato cultivation.In 2016,it passed the variety approval of Guangdong Province.更多还原