金方倫 王賢玉 羅朝斌 韓世玉 楊勝特 黎明 張發維 胡世葉


摘 ? ?要:2017—2018年以育711桑樹品種為試材,對其母枝直徑、母枝留芽量、母枝結果量、結果梢芽量、結果梢結果芽百分率和結果梢結果量等6個枝條性狀指標,以及單果質量、桑果縱徑、桑果寬橫徑、桑果厚橫徑、桑果平均橫徑、果汁含糖量、桑果種子數量、單株產量、果柄長度和果柄直徑等10個桑果質量性狀指標進行調查,并對桑樹各項指標進行相關分析。結果表明:(1)隨著桑樹母枝直徑的減小,桑樹母枝結果量和單株產量呈先增加后降低的趨勢,均在分組3(25.0 mm>d≥22.0 mm)達到最大值;(2)結果梢結果量與結果梢結果芽百分率、結果梢結果量與桑葚厚橫徑、結果梢結果芽百分率與桑葚平均橫徑、桑葚厚橫徑與平均橫徑、果柄直徑與桑樹桑果縱徑、母枝結果量與單株產量顯著正相關(P<0.05),而平均橫徑與桑葚含糖量、母枝芽量與果柄直徑、母枝直徑與果柄長度、母枝結果量與桑葚寬橫徑、桑葚寬橫徑與單株產量顯著負相關(P<0.05)。
關鍵詞:桑樹;母枝直徑;桑果質量;相關分析
中圖分類號:S888 ? ? ?文獻標識碼:A ? ? ?DOI 編碼:10.3969/j.issn.1006-6500.2019.08.012
Abstract: In 2017—2018, the experiment was conducted with Yu711 mulberry varietiy, six branches trait indices (mother branch diameter, buds number remaining on mother branch, fruits number of mother branch, buds number of fruit branch, fruits number of fruit branch, and rates of fruits number in buds number of fruit branch) and ten quality indices of mulberry fruit (weight per fruit, longitudinal diameter, wide diameter, thick diameter, average width diameter, sugar content, seeds number per fruit, yields per plant, peduncle length, and peduncle diameter) were investigated, and the relationships among the indices were analyzed and discussed. The results showed that with the decrease of the mother branch diameter, the yield per mulberry plant and fruits number of mother branch increased first and then decreased, reaching the maximum value in group 3 (25.0 mm>d≥22.0 mm). There were significant positive relationships (P<0.05) between fruits number of fruit branch and rates of fruits number in buds number of fruit branch, fruits number of fruit branch and fruit thick diameter, rates of fruits number in buds number of fruit branch and fruit average width diameter, fruit thick diameter and fruit average width diameter, peduncle diameter and fruit longitudinal diameter, fruits number of mother branch and yield per plant, while there were significant negative relationships(P<0.05) between fruit average width diameter and fruit sugar content, buds number remaining on mother branch and peduncle diameter, mother branch diameter and peduncle length, fruits number of fruit branch and fruit wide diameter, fruit wide diameter and yield per plant.
Key words: ?Morus alba L.; mother branch diameter; fruit qualtity; correlation analysis
桑樹(Morus alba L.)適應性較強,在農業種植業中效益較高,是發展生態旅游和退耕還林的優選樹種之一。貴州高原位于長江以南,緯度適中,海拔適中[1],生態環境和自然資源優勢為包括果桑在內的落葉樹種生長提供了良好的條件。近年來,隨著農業產業結構的優化調整,桑樹在貴州種植面積和產量等有所上升。在大面積生產中,調查研究發現育711桑樹品種在貴州表現良好,主要表現為葉片產質量和桑果產量等方面都有良好的特征。當然育711桑樹品種的結果習性、桑果和桑葉等的生長發育除受品種等內部因素的影響外,還受外部因素的影響,如氣候條件、土壤條件和栽培管理條件等因素。因此……