摘要:
1979年用普薯125和南灰3号杂交育成闽抗329。1981～1984年经室内66个不同毒力的薯瘟菌株测定结果,平均病情指数为7.4。田间苗期试验结果,平均死亡率为0.8%。田间小区试验结果,平均病情指数为2.5。全省重点薯瘟区试验结果,平均病情指数为4.7,均比本地栽培的对照品种新种花为低。证明闽抗329抗瘟力与抗瘟对照种华北48相似。在薯瘟区72个点生产力测定结果,闽抗329比华北48增产31.6%,比新种花增产2.8～2.9倍。在无瘟区53个点和省预试区试28个点测定结果,比新种花增产10.8～26.6%。闽抗329结薯早,插后25天幼根形成块根,插后120天亩产达3050公斤。在高山、沿海、平原和山区高产栽培,亩产均在4500公斤以上。闽抗329 1984～1986年已在本省仙游、安溪、宁德等40个县(市)薯区推广种植,累计面积达80多万亩。共增产粮食1亿多公斤,创社会效益3000多万元。并在邻省浙、赣、粤薯瘟区推广1万余亩,均表现显著增产。
Abstract:
As a new variety of sweet potato, Minkang 329 was produced by crossing Pushu 125 and Nanhui No. 3. The 1981-1935 green-house tests for 66 different virulent strains of sweet potato bacterial wilt (Pseadomonas solanacearum) showed that the mean index of disease infection was 7.4.In the field conditions, the death rate of seeding was 0.8%. In the field plots the mean index of disease infection was 2.5; in the diseased plots, 4.7 : lower than that of the local check variety Xinzhonghua. The results also indicated that Mingkang 329 matched China’s check variety Huabei 48 in the resistance to sweet potato bacterial wilt.Tests for its productivity in 72 diseased areas showed that the yield of Mingkang 329 was 31.6% higher than that of Huabei 48, 2.8-2.9 times that of Xinzhonghua. But in 53 disease-free areas and 23 yield estimating plots of Fujian Province, the yield of Minkang 329 increased by 10.8 -26.6% as compared with Xinzhonghua.Minkang 329 formed its tuber early. 25 days after transplantation, the tuber was formed out of young roots. The yield reached 3050 kg. per mu in 120 days.Under better cultivation,the average yield was more than 4500 kg. whether in mountain districts, plains or coastal sandy areas.From 1934 to 1986, Minkang 329 was introduced to 40 counties in Fujian. The accumulative cultivation area reached 800 thousand mu.The in-creased output altogether was more than 100 million kg. The social efficiency was over 30 million yuan. This variety was also introduced to the neibouring provinces and also showed higher yield in an area of 10 thousand mu.
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