新疆杂交榛果实生长发育动态及模型研究

Study on the model and the growth and development dynamics of the major hybrid hazel of Xinjiang

【目的】了解新疆主栽杂交榛果实生长发育动态规律,以期为果实发育过程中的土肥管理和微环境控制提供依据,进一步提高新疆杂交榛的产量和质量。【方法】对‘达维’、‘辽榛7号’、‘玉坠’、‘平欧15号’4个新疆主栽杂交榛品种(系)果实发育期跟踪测定三径、单果鲜质量、体积、果仁鲜质量、果壳厚度、出仁率、空粒率,采用数学模型拟合果实生长发育动态曲线。【结果】新疆主栽4个杂交榛品种(系)果实动态生长发育的变化表现为"S"型生长曲线,其拟合曲线的相关系数R2都在0.98以上,达到极显著水平。果壳厚度的增长为指数生长曲线,其相关系数R2都在0.94以上,呈极显著水平。【结论】采用数学模型进行拟合曲线分析,可以较好的反映果实生长发育动态规律,为杂交榛果实生长发育提供较为准确的预测。

[Objective]The study was to understand Xinjiang hybrid hazelnut fruit growth and development in order to provide a theoretical basis for Dohi management and micro-environmental control and to improve Xinjiang hybrid hazelnut yield and quality.[Method]Taking ＇Dawei＇, ＇Liaozhen7＇, ＇Yuzhui＇, ＇Pingoul5＇ as experimental materials, three diameters, single fruit fresh weight and volume, nut fresh weight, shell thickness, kernel rate and empty grain rate were observed during the fruit development. The mathematical model was used to fit the dynamic curve of fruit growth and development. [ResultlThe fruit growth and development dynamics of the major hybrid hazel of Xinjiang showed ＂S＂ type growth curve by using Logistic model fitting curve, the correlation coefficient R2 were above 0.98, reaching significant level. Shell thickness growth expressed as exponential growth curve, and the correlation coefficient R2 was above 0.94, reaching very significant level. [Conclusion]The mathematical models can better reflect the fruit growth dynamic law and provide more accurate forecast for hybrid hazel fruit growth and development