云南保山山区7个甜樱桃品种生长情况及果实品质综合分析OA

To screen out suitable sweet cherry cultivars for cultivation in the mountainous areas of Baoshan City,Yunnan Province,and enrich the local fruit industry structure,a comprehensive evaluation was conducted using 7 major sweet cherry cultivars cultivated in southern China as test materials.The evaluation was carried out by observing phenological periods,determining growth and fruit quality indicators,combined with difference analysis,correlation analysis and principal component analysis.The results showed that'Brooks'had the earliest flowering period and'Summit'had the latest(with a difference of about 2 weeks),while'Tieton'had the earliest fruit ripening period and'Summit'had the latest(with a difference of about 3 weeks).Among the growth indicators,the coefficient of variation of yield per plant was the largest(42.9％),and among the fruit indicators,the coefficient of variation of sugar-acid ratio was the largest(43.0％).There was an extremely significant positive correlation between cultivars and 15 traits,and fruit morphological traits were closely correlated with leaf size.The cumulative explanatory rates of 4 main factors for growth traits and 4 main factors for fruit quality were 83.83％and 88.98％respectively.The comprehensive ranking indicated that'Brooks' had the optimal growth characteristics and'Tieton'had the optimal fruit quality.Based on the results of comprehensive analysis,'Tieton','Brooks'and'Shuangluo'are recommended as suitable sweet cherry cultivars for cultivation in Xiyi Township,the mountainous area of Baoshan City.