Effects of Different Planting Density and Remained Leaves Number on Contents of Chromoplast Pigments and Their Degraded Products in Flue-cured Tobacco Leaves under Well-cellar Transplanting
ZHAO Hui
WANG Xiying
LIU Guoquan
LIU Yangzhou
Abstract：In order to investigate the population structure and improve the aroma quality of flue-cured tobacco leaves under well-cellar transplanting,this paper used flue-cured tobacco variety Yuyan 87 as material to study the effects of different planting density and remained leaf number on contents of chromoplast pigment and their degraded products in the flue-cured tobaccos under well-cellar transplanting.The results showed that planting density,remained leaf number and their interaction had significant effects on contents of chromoplast pigment and their degraded products in flue-cured tobacco leaves under well-cellar transplanting.After flue-curing,the chlorophyll content showed a "V" shape trend,and the contents neophytadiene,carotenoid and their degradation products increased first and then declined with the decrease of planting density.Through the comparison between different remained leaf number treatments,the orders of chlorophyll a,chlorophyll b and total chlorophyll contents were B3 (24 leaves per plant) ＞ B1 (18 leaves per plant) ＞ B2(22 leaves per plant),and B2 treatment had the highest contents of chromoplast pigment and carotenoid degradation products.In different treatments of planting density and the remained leaf number interaction,A2B2 treatment[16 675 plants/ha (plant spacing was 100 cm × 60 cm),remained leaves numbers of 22 leaves per plant] was the highest in neophytadiene and carotenoid degradation products contents,which were 1 095.15 μg/g and 69.561 7 μg/g respectively,accounting for 89.29％ and 5.67％ of the total volatile aroma contents.Therefore,A2B2 treatment was an effective population structure for improving the aroma quality in flue-cured tobacco leaves under well-cellar transplanting.
Keywords：flue-cured tobaccowell-cellar transplantingdensityremained leaf numberchromoplast pigmentdegraded products
Publication Date：2017-07-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 39-43 )