饼肥对烤烟叶片不同发育时期类胡萝卜素及其主要降解产物的影响

Effect of cake fertilizer on content of carotenoids and major carotenoid degrading products in different phases of flue-cured tobacco

采用盆栽试验研究了饼肥对不同发育时期烤烟叶片类胡萝卜素及其主要降解产物的影响。结果表明,烟叶发育过程中类胡萝卜素各组分含量随生育时期逐渐下降,不同处理间烟叶类胡萝卜素含量变化存在差异。50%饼肥处理可促进烟叶类胡萝卜素总量、新黄质、叶黄素和中后期β-胡萝卜素的积累,而用量过高不利于初期和末期烟叶中紫黄质的积累;适宜的饼肥用量可调节发育末期类胡萝卜素类物质的组分构成,在烟叶发育期,50%饼肥处理的烟叶中多数类胡萝卜素降解产物总量较大,β-大马酮、香叶基丙酮、β-紫罗兰酮、二氢猕猴桃内酯等物质含量也较其它两个处理高。

Pot experiment was conducted to study the effect of cake fertilizer on content of carotenoids and major carotenoid degradation products during various growing periods of flue-cured tobacco. Resuhs showed that the content of carotenoids gradually decreased during growth period and changed with different cake fertilizer dosage. 50% cake fertilizer treating contributed to the accumulation of total carotenoids, neoxanthin, lutein, and β-carotene which was produced during middle and latter period. Superfluous cake fertilizer made against the accumulation of violaxanthin during initial and latter periods. Component ratio of carotenoids at latter period could be adjusted by proper dosage of cake fertilizer. Content of most carotenoid degrading productions under 50% cake fertilizer condition, such as beta-damascenone, geranylacetone, beta-ionone, and dihydroactinolide, was higher than that of other two fertilizer conditions.