TY - JOUR T1 - Evaluation of morphological changes of Crataegus meyeri Pojark in relation to some climatic parameters in Iran TT - بررسی تغییرات ریخت شناسی زالزالک تحت تأثیر برخی عوامل اقلیمی در ایران JF - nbr JO - nbr VL - 4 IS - 4 UR - http://nbr.khu.ac.ir/article-1-3053-en.html Y1 - 2018 SP - 320 EP - 328 KW - correlation KW - ecology KW - Rosaceae KW - south west Asia KW - variation N2 - The genus Crataegus L. has a wide distribution in Iran. Induviduals of Crataegus meyeri Pojark. show morphological variations in different regions. In this research, the effects of climatic variations on morphological traits of C. meyeri were studied. Seventy five specimens collected from nine provinces of Iran were measured in two sets of quantitative and qualitative traits. Statistical analysis of climatic data and morphological traits showed that wind and temperature were the most effective factors affecting the variety of morphological traits including leaf blade of short shoot and flowering shoot, indumentum of fruit surface and fruit shape. Relative humidity has also been correlated with the shape of the fruit base. Quantitative traits of leaf blade of short shoots and flowering shoots showed the highest correlation and leaf blade of elongate shoots with the least statistical correlation with climatic data. M3 10.29252/nbr.4.4.320 ER -