摘要
【目的】研究外源5-氨基乙酰丙酸(ALA)对猕猴桃植株生长及其果实品质的影响,以期为猕猴桃生产及其品质改善提供理论支持。【方法】以翠玉猕猴桃为材料,从开花前期至膨果期每隔20 d叶面喷施质量浓度10~50 mg/L的外源ALA,共喷施3次,测定其叶绿素含量(SPAD)、净光合速率、叶面积、叶厚、茎粗、维生素C含量、单果质量、可溶性固形物含量和可滴定酸含量等指标。【结果】10~40 mg/L外源ALA能不同程度地提高猕猴桃的生长和品质指标,除叶长以外,均以30 mg/L ALA处理的效果最好;与对照相比,30 mg/L外源ALA处理猕猴桃植株叶片的叶绿素含量增加6.59%(膨果期),净光合速率增加40.52%,维生素C含量增加25.00%,单果质量增加13.66%,可溶性固形物含量增加13.03%,固酸比增加5.15%。【结论】开花前期至膨果期喷施适宜质量浓度的ALA,能改善猕猴桃的生长发育并提高其果实品质。
[Purpose]To study the effects of exogenous 5-aminolevulinic acid(ALA)on the vegetative growth and fruit quality of kiwi,and to provide a support for kiwi fruit production and quality improvement.[Methods]Using kiwi cultivar Cuiyu material,foliar spraying of exogenous ALA at the mass concentration of 10-50 mg/L every 20 days from the beginning of flowering to the fruit expansion period,three times in total,chlorophyll content(SPAD),net photosynthetic rate,leaf area,leaf thickness,stem thickness,vitamin C content,single fruit weight,soluble solid content,and titratable acid content were measured.[Results]ALA with the mass concentration of 10-40 mg/L could improve the indexes value of the growth and quality tested in kiwi at different degrees.Except leaf length,kiwi treated by 30 mg/L ALA obtained the best results for all other indexes.Compared with the control,chlorophyll content increased by 6.59%(fruit expansion period),net photosynthetic rate increased by 40.52%,vitamin C content increased by 25.00%,single fruit weight increased by 13.66%,soluble solid increased by 13.03%,and solid-acid ratio increased by 5.15%.[Conclusion]Foliar spraying exogenous ALA with appropriate mass concentration at the beginning of flowering to the fruit expansion period can improve plant growth and fruit quality of kiwi.
作者
黄姣云
李慧
杨荣萍
顾菁菁
唐艺榕
赵宇
吴红芝
HUANG Jiaoyun;LI Hui;YANG Rongping;GU Jingjing;TANG Yirong;ZHAO Yu;WU Hongzhi(College of Horticulture and Landscape,Yunnan Agricultural University,Kunming 650201,China;Southwest China Germplasm Bank of Wildlife,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China)
出处
《云南农业大学学报(自然科学版)》
CAS
CSCD
北大核心
2021年第6期1017-1021,1043,共6页
Journal of Yunnan Agricultural University:Natural Science
基金
云南省院士专家工作站项目(2018IC098)
云南省高水平大学创新人才培养基地——园艺学创新创业训练计划(2017CX003)
云南农业大学第二十届学生科技创新创业基金(2019ZKY221)。