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中文摘要：
通过调整移栽期和采收期，探索豫中地区烟叶成熟度与质体色素及其降解产物变化的关系。结果表明，叶龄30 d后，随着成熟度的增加，烟叶叶绿素及类胡萝卜素含量呈下降趋势；中部叶质体色素含量及其降解率以5月6日移栽较高，上部叶以4月27日移栽较高。调制后烟叶的质体色素含量中部叶高于上部叶，且随着烟叶推迟采收表现出逐渐降低的趋势，但移栽期对质体色素含量影响不大。中部、上部叶类胡萝卜素降解产物及新植二烯的含量以5月6日移栽各推迟5d采收处理最高。综上所述，合理的移栽期及适当的推迟烟叶采收有利于质体色素的形成和其降解产物的提高。
英文摘要：
By adjusting the transplanting and harvest dates, we explored the relationship between the maturity of tobacco leaves and plastid pigment and the change of degradation product in the central region of Henan. The result showed that, with the increase of maturity after 30 d of tobacco leaf age, the content of chlorophyll and carotenoid in tobacco leaves had decreasing trend. Content of chromoplast pigment and its degradation rate in middle leaves were relatively high at May 6th during transplanting period, and upper leaves were relatively high at April 27th. Plastid pigment content after modulation, higher in middle leaves than in upper leaves, and it tended to decrease gradually with the delaying harvesting dates, but transplanting period had little effect on content of chromoplast pigment. Carotenoid degradation products in middle and upper leaves and content of neoplytadiene were the highest after delaying 5 d, which transplanted in May 6th. Reasonable transplanting dates and detaining the harvest time properly were beneficial to production of plastid pigment and improvement of its degraded products.
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