摘要
以三峡库区引进栽种的金秋砂糖橘为试材,研究不同生长时期柑橘叶、花及果功能性状的变化规律及相关性,以期了解金秋砂糖橘的养分权衡关系及生存适应策略,从而进一步深入探究其内在生理机制,为金秋砂糖橘的栽培管理提供理论参考依据,达到提高果实产量与质量的目标。研究结果表明:金秋砂糖橘在春季到秋季的生长期间,叶面积不断变化,春季最小,夏季最大。春叶为植株提供氮保证生长,夏叶提供可溶性碳水化合物保证果实糖分的积累,秋叶提供游离氨基酸保证果实成熟及风味。金秋砂糖橘叶片在叶经济谱(LES)中的位置从“低投入-缓慢回报”向“低投入-高回报”再向“高投入-高回报”移动,与自然生态系统中的叶经济谱情况类似,但不同季节采用不同策略。叶宽与叶面积、叶干物质、叶绿素含量呈显著正相关,比叶面积与叶干物质呈显著负相关。叶可溶性总糖含量与果实糖分成正比,叶总游离氨基酸与果实糖分成反比;叶全氮含量与总酸含量成正比;果维生素C含量与叶可溶性总糖呈显著负相关,与叶总游离氨基酸呈极显著正相关。通过以上性状之间的相互关系,可以预测果实生长情况做出对应管理措施,提升果实产量与品质。
Taking Jinqiu Clementine introduced and planted in the Three Gorges reservoir area as the test material,the changes and correlations of functional traits of citrus leaves,flowers and fruits at different growth stages were studied,in order to understand the nutrient balancing relationship and survival adaptation strategy of Jinqiu Clementine,and further explore its internal physiological mechanism,providing theoretical reference for the cultivation and management of Jinqiu Clementine.To achieve the goal of improving fruit yield and quality.The results showed that the leaf area changed continuously during the growth period from spring to autumn,with the smallest in spring and the largest in summer.Spring leaves provide nitrogen for growth,summer leaves provide soluble carbohydrates for sugar accumulation,and autumn leaves provide free amino acids for ripening and flavor.The position of the leaves in the leaf economic spectrum(LES)moved from"low input-slow return"to"low input-high return"and then to"high inputhigh return",which was similar to the leaf economic spectrum in natural ecosystems,but different strategies were adopted in different seasons.Leaf width was positively correlated with leaf area,leaf dry matter and chlorophyll content,while specific leaf area was negatively correlated with leaf dry matter.The total soluble sugar content of leaves was proportional to the sugar content of fruits,and the total free amino acids were inversely proportional to the sugar content of fruits.The total nitrogen content in leaves is proportional to the total acid content.The content of vitamin C in fruit was negatively correlated with total soluble sugar in leaves and positively correlated with total free amino acids in leaves.Through the relationship between the above traits,the fruit growth can be predicted and corresponding management measures can be made to improve the fruit yield and quality.
作者
章蓉月
阮宇
赵文
邓婕
罗欣
ZHANG Rongyue;RUAN Yu;ZHAO Wen;DENG Jie;LUO Xin(College of Biological and Food Engineering,Chongqing Three Gorges University,Chongqing 404100)
出处
《林业建设》
2024年第1期32-39,共8页
Forestry Construction
基金
万州区百万头生猪生态养殖关键技术集成与应用,重庆市科技局资助(2105-0911921n)
关键词
三峡库区
金秋砂糖橘
叶功能性状
叶经济谱
Three Gorges reservoir area
Jinqiu Clementine
leaf functional traits
leaf economic spectrum
