INFLUENCE OF FOLIAR APPLICATION OF GA3 AND CPPU ON GROWTH AND FLOWERING OF FREESIA PLANTS " GOLDEN MELODY " | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 8, Issue 2, June 2016, Pages 23-30 | ||
| Authors | ||
| Sami Kareem AL-Chalabi; Safaa Mohamad Salih Al-Khafaji | ||
| Abstract | ||
| The research was carried out at Al-Zawraa park/ Mayoralty of Baghdad on Fall season 2014/2015. Corms of Freesia Golden Melody cv. were sprayed with Gibberellic acid (GA3) at 0,50 and 100 mg l-1 or N-(2-chloro-4-pyridyl)-N-phenylurea)(CPPU) at 0, 10 and 20 mg l-1 . The results could be summarized as follow : Foliar spray of Freesia plants by GA3 at 100 mg l-1(G100(significantly increased vegetative growt parameters: plant height (42.21cm),number of leaves plant-1 (6.53) , leaf area (475.96 cm2),leaf content of chlorophyll (33.79 mg 100 gm-1 fresh weight), percentages of dry matter , proteins and total carbohydrates (10.46, 16.22,and 10.86( respectively. In addition , 100 mg l-1 of GA3 enhanced the flowering characters tasted : number of inflorescences plant-1 (3.95),number of florets inflorescence-1 (10.79), length of peduncle (15.49cm), diameter of basal floret (5.29cm),flowering period (17.71days),vase life (11.80 days), treated plants took (97.09 days) to bloom , while 50 mg l-1 of GA3 was superior on increasing diameter of peduncle (3.317 mm) . The plant growth regulator CPPU at 20 mg l-1 was more effective on vegetative growth: plant height (37.81cm), number of leaves plant-1 (7.03) , leaf area (498.52 cm2),leaf content of chlorophyll (34.06 mg 100 gm-1 fresh weight) , percentages of dry matter, proteins and total carbohydrates(10.69,16.46,and10.94)respectively. Furthermore,CPPU at 20 mg l-1 increased flowering characters: number of inflorescences plant-1 (4.07), number of florets inflorescence-1 (11.40), length of peduncle (13.69 cm), diameter of peduncle(3.48 mm) , diameter of basal floret(5.25 cm),flowering period (17.90 days),vase life (11.93 days),besides flowering date was earlier (97.07 days) .Most interactions between the two factors were significantly enhanced all vegetative and flowering characters studied . | ||
| Keywords | ||
| foliar application; CPPU | ||
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