Full Research

Effect of Bulb Size and Number of Growing Axis on Seed Yield and Quality in Onion (Allium cepa L.)

V. R. Yalamalle

  • Page No:  1409 - 1412
  • Published online: 07 Dec 2016
  • DOI : HTTPS://DOI.ORG/10.23910/IJBSM/2016.7.6.1728a

  • Abstract
  •  vishwanath_yal@yahoo.com

The present study was aimed to determine the effect of the number of seed bulb growing axis and the bulb size on the seed yield and seed quality in onion variety Bhima Kiran. Two independent experiments were laid out in randomized complete block design. For determining the effect of the number of growing axis medium sized bulbs (wt of 90±5 g) were divided in to three groups based on number of growing axis - single, two and three centers. For determining the effect of bulb size single centered bulbs with three different sizes of bulbs- small (60±5 g , 45±5 mm diameter), medium (90±5, diameter 55±5 mm), and large (120±5 g, diameter 65±5 mm) were used. The number of growing axis significantly enhanced the yield and yield contributing characters. The bulbs with three centers produced 63% more tillers plant-1, 35 % more scapes plant-1 and 66% higher seed yield as compared to plants raised from single growing axis. The number of growing axis did not affect the seed quality characteristics. The bulb size significantly enhanced the seed yield and yield contributing characters.  Large bulbs produced 58% more tillers plant-1, 60% more scapes plant-1, and 48% higher seed yield as compared to small bulbs. The seed quality characteristics like 1000-seed weight, germination %, seedling dry weight and vigour index-II were also higher in plants with large bulbs.

Keywords :   Bulb size, growing axis, seed yield, quality

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