烤烟新品系——品4选育初报

The selective breeding of a new strain P4 and its characters in flue-cured tobacco

烤烟新品系品4 是雄性不育一代杂种。从1993 年开始观察试验,经过6 年的试验、示范,其间进行4 年4 次烟叶化学成分分析和全国评吸鉴定。试验、示范结果历年一致。该品系生育期与K326 无明显差异,农艺性状好,经济性状显著优于K326 ,需肥量中等,高抗气候斑点病,中抗花叶病,抗青枯病、赤星病和黑胫病。667 m2 产量、均价、667 m2 产值、上等烟率分别比K326 高17-28 kg、0-64 元/kg、174-55 元、5-59 % ,烟叶化学成分协调,香吃味与K326 相当,易烘烤,适应性较广。

A new strain of P4 was hybrid generation of male sterile in flue-cured tobacco.Since 1993 the observation experiment to P4 was started,from 1994 to 1995 took part in variety test of 4 areas,from 1996 to 1997 participated in area experiment of 18 areas in Guizhou province,in 1997 passed the strain examination and was recommended to attend south area experiment of 14 areas all over the country. At the same time the production experiment had been done in 8 areas of Guizhou province for many years. The results showed that there was no variance of growth period compared with control strain K326.The agronomic performance and economic characters of P4 were better than K326,medium need of fertilizer,high resistance to weather fleck,medium resistance to tobacco mosaic,granville with and black shank.The yield per hectare,average price,output value per hectare and upper leaf proportion were 17.28 kg,0 64 yuan/kg,174.55 yuan and 5.59% respectively,much better than K326.The chemical components were well-balanced and the taste was equal to K326,The new strain had the advantages of easy flue-cured and wide adaptability.