Canonical Correlation Analysis for Determination of Relationship between Morphological and Physiological Pollinated Characteristics in Five Varieties of Phalaenopsis

Phalaenopsis is an important genus of orchids that is grown for economical production of cut flower and potted plants. The objective of this study is the evaluation of correlation between morphological and physiological traits of self and cross-pollination of 5 varieties of Phalaenopsis orchid. Some morphological traits were measured: Capsule length (CL), capsule volume (CV), weight of seeds in capsule (WSC), full weight of capsule (FWC) and empty weight of capsule (EWC) and physiological traits: Time to first pollination symptom (TPS), time to capsule swelling (TCS) and capsule ripening (CR). The results showed that correlation (canonical r) was 0.91 in first pair canonical variables; second and third pair canonical variables had correlation 0.68 and 0.30, respectively. The first canonical variable in physiological traits revealed 66.1% variation of physiological variables. Special values were 0.820, 1.388 and 4.850 for Wilks' Lambda, Pillai's Trace and Roy's Greatest Root, respectively. Canonical correlation was significant for physiological and morphological characteristics in all statistical tests. The first canonical variables in physiological characteristics had positive correlation with TCS and TPS, so it was resulted that if TCS was fewer, TPS and CR characteristics were fewer. In pollinated varieties, the lowest TCS belonged to Nottingham× Nottingham and Bucharest×Nottingham; and the most CR belonged to Dubrovnik×Dubrovnik and Memphis×Dubrovnik of pollination states; Therefore, it can be concluded that white and yellow female parent require fewer and more days for capsule swelling respectively.