Evaluation of Resistance to Bacterial Wilt and Quality Analysis of Different Tobacco Varieties in Chongqing
To screen the high-yield and high-quality tobacco varieties with resistance to bacterial wilt and suitable for planting in Chongqing,the resistance characteristics of different flue-cured tobacco varieties to bacterial wilt were systematically investigated,and leaf quality and yield were evaluated in Chongqing tobacco production area from 2020 to 2021.The results showed that the adaptability of different tobacco varieties to Chongqing area was different,and the difference in resistance to bacterial wilt and yield traits of tobacco varieties had a variety charac-teristic and inter-annual effect.In terms of resistance to bacterial wilt,tobacco varieties'YK1833''FJ1604''2014-502''2015-614''Guiyan 14''G27'and'6036'showed stable resist-ance to bacterial wilt at different growth stages in two years,with high resistance or resistance.In terms of yield,there were 5 varieties with higher yield and yield of superior leaf in 2020,in-cluding'K326''2014-502''2015-614''Guiyan 14'and'6036'.There were 5 varieties with high yield and yield of superior leaf in 2021,namely'HB1709''YK1833''HN2146''09-1 8-3'and'6036'.In terms of quality,the contents of total sugar and reduced sugar of all varieties were much higher than the suitable range,and the other indicators showed different performances in different years.Among them,the comprehensive quality performance of'HB1709''YK1833'and'FJ1604'was relatively stable in two years.In conclusion,the variety'6036'with resistance to bacterial wilt,high yield and high quality was selected as suitable cultivar for planting in Chongqing.Some defects in quality could be improved by cultivation methods and soil conditioning.
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