The present study was to test the hypothesis that the plant growth retardants chlorocholine chloride(CCC) and paclobutrazol(PBZ)could improve the carbohydrate accumulation in lily bulbs by enhancing photosynthetic cap...The present study was to test the hypothesis that the plant growth retardants chlorocholine chloride(CCC) and paclobutrazol(PBZ)could improve the carbohydrate accumulation in lily bulbs by enhancing photosynthetic capacity and changing endogenous hormones.Plants of Lilium Oriental hybrids'Sorbonne'were treated with a foliar spray of CCC or PBZ(both at 300 mg/L)solution,at six weeks after planting(6 WAP).The morphological parameters,endogenous hormone contents(gibberellic acid(GA),abscisic acid(ABA),and indole-3-acetic acid(IAA)),and carbohydrate contents were measured from 6 to 18 WAP,at 2-week intervals.The results showed that CCC increased the biomass of leaves and stems which might produce more photoassimilates available for transportation and utilization.However,PBZ treatment suppressed vegetative growth and favored photoassimilate transportation into bulbs.A slight delay of bud and anthesis formation was observed in both treated plants.CCC and PBZ treatments substantially enhanced the sucrose contents in leaves probably due to the increase of chlorophyll contents.Treatment with CCC or PBZ decreased GA but increased IAA contents in lily bulbs which might stimulate starch accumulation and formation of new scales.Our experiment suggested that CCC or PBZ treatment is an effective method to promote carbohydrate accumulation in lily bulbs.展开更多
以6年生夏黑萄萄为试材,研究不同浓度矮壮素对夏黑葡萄果实品质的影响。结果表明,果实中矮壮素的残留浓度与施用的矮壮素浓度呈正相关性,高浓度的矮壮素能够显著减少果实的穗重、粒重、皮重、纵径、横径。低浓度(0.33 ml/L)矮壮素对于...以6年生夏黑萄萄为试材,研究不同浓度矮壮素对夏黑葡萄果实品质的影响。结果表明,果实中矮壮素的残留浓度与施用的矮壮素浓度呈正相关性,高浓度的矮壮素能够显著减少果实的穗重、粒重、皮重、纵径、横径。低浓度(0.33 ml/L)矮壮素对于果实品质的影响不稳定,中高浓度(0.5和1.0 m L/L)矮壮素对于果实品质的影响比较稳定。高浓度矮壮素对提高葡萄果实固酸比、降低总黄酮和单宁含量具有显著作用,同时能提高果胶含量和氨基酸尤其是必需氨基酸的含量,提高其营养价值。展开更多
Terpene lactone contents in different organs of Ginkgo biloba L. and leaf, stem and root of G. biloba seedlings treated with chlorocholine chloride were determined by GC. The results showed that total terpene lactone ...Terpene lactone contents in different organs of Ginkgo biloba L. and leaf, stem and root of G. biloba seedlings treated with chlorocholine chloride were determined by GC. The results showed that total terpene lactone contents in the order from high to low were bud (1.973 mg·g-1), leaf (1.753 mg·g-1), root, stem, and the terpene lactone content in phloem was higher than that in xylem. Leaf contained more bilobalide than root and stem. Chlorocholine chloride treatment significantly increased terpene lactone content of G. biloba seedlings. The possible way of terpene lactone biosynthesis was discussed.展开更多
文摘The present study was to test the hypothesis that the plant growth retardants chlorocholine chloride(CCC) and paclobutrazol(PBZ)could improve the carbohydrate accumulation in lily bulbs by enhancing photosynthetic capacity and changing endogenous hormones.Plants of Lilium Oriental hybrids'Sorbonne'were treated with a foliar spray of CCC or PBZ(both at 300 mg/L)solution,at six weeks after planting(6 WAP).The morphological parameters,endogenous hormone contents(gibberellic acid(GA),abscisic acid(ABA),and indole-3-acetic acid(IAA)),and carbohydrate contents were measured from 6 to 18 WAP,at 2-week intervals.The results showed that CCC increased the biomass of leaves and stems which might produce more photoassimilates available for transportation and utilization.However,PBZ treatment suppressed vegetative growth and favored photoassimilate transportation into bulbs.A slight delay of bud and anthesis formation was observed in both treated plants.CCC and PBZ treatments substantially enhanced the sucrose contents in leaves probably due to the increase of chlorophyll contents.Treatment with CCC or PBZ decreased GA but increased IAA contents in lily bulbs which might stimulate starch accumulation and formation of new scales.Our experiment suggested that CCC or PBZ treatment is an effective method to promote carbohydrate accumulation in lily bulbs.
文摘以6年生夏黑萄萄为试材,研究不同浓度矮壮素对夏黑葡萄果实品质的影响。结果表明,果实中矮壮素的残留浓度与施用的矮壮素浓度呈正相关性,高浓度的矮壮素能够显著减少果实的穗重、粒重、皮重、纵径、横径。低浓度(0.33 ml/L)矮壮素对于果实品质的影响不稳定,中高浓度(0.5和1.0 m L/L)矮壮素对于果实品质的影响比较稳定。高浓度矮壮素对提高葡萄果实固酸比、降低总黄酮和单宁含量具有显著作用,同时能提高果胶含量和氨基酸尤其是必需氨基酸的含量,提高其营养价值。
文摘Terpene lactone contents in different organs of Ginkgo biloba L. and leaf, stem and root of G. biloba seedlings treated with chlorocholine chloride were determined by GC. The results showed that total terpene lactone contents in the order from high to low were bud (1.973 mg·g-1), leaf (1.753 mg·g-1), root, stem, and the terpene lactone content in phloem was higher than that in xylem. Leaf contained more bilobalide than root and stem. Chlorocholine chloride treatment significantly increased terpene lactone content of G. biloba seedlings. The possible way of terpene lactone biosynthesis was discussed.