Recurrent flowering: a new physiological disorder in Alphonso mango.
Burondkar M. M., Rajput J. C., Waghmare G. M., Jamadagni B. M., Chavan S. A.
Author Affiliation: Konkan Krishi Vidyapeeth, Dapoli - 415712, Dist. Rantagiri (M.S.), India.
: 669-673
Abstract : Alternate bearing habit and development of spongy tissues in ripe fruits are well known physiological problems which limit production and quality of Alphonso mango. Recently a new physiological disorder affecting flowering was noticed in Alphonso grown in India which was characterized by emergence of new flowering panicles from the base points of previously emerged panicles. This recurring flowering is mostly observed 45-60 days after the emergence of the main panicle. The recurring flowering causes severe fruit drop at various stages (peanut stage 63%, marble stage 29%, and egg stage 8%). About 68 mango cultivars were screened for this malady during 1997 season at Regional Fruit Research Station, Vengurla, India. It was evident that 28 cultivars exhibited recurring flowering. Amongst the cultivars studied, Alphonso, Neelam and Yermal Goa recorded the highest incidence (19%), followed by Karanjio (15%) and Sannakulu (11%). Himmayuddin, Vanaraj, Baramasi and Hamlet recorded recurring flowering in the range of 6-8%. Other commercial varieties (Ratna, Kesar, Sindhu, Pairi and Goamankur) recorded 5% flowering recurrence. Spraying with gibberellic acid (50, 100, 150 and 200 ppm) significantly reduced the incidence of recurrent flowering to 9.25, 2, 1.25 and 1.75%, respectively, compared with the Alphonso control.