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Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 5 | Page No.: 887-889
DOI: 10.3923/pjbs.2000.887.889
 
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Effect of Gamma Radiation on Nucellar Embroyogenesis of Various Citrus Cultivars

Nafees Altaf, Ehsanullah Khan Marwat, Shahid Akbar Khalil and Inksar A.Bhatti

Abstract:
Twenty Citrus cultivars were studied for various characteristics like fruit weight and diameter, ovule length, diameter and weight at the time of harvest for access of nucellus tissue for embryogenesis study in in vitro conditions. The maximum fruit weight, diameter, ovule weight, length and diameter was found in cultivar Shamber of Grape fruit which has minimum value of coefficient of nucellar regeneration (CNR). However, fruit characteristics studied have no relation with CNR values. Cultivars had variable behaviour for nucellar embryogenesis responses, perhaps they were studied in one medium MS+BA (0.5 mg/l)+5 mg/l glutamine. The nutritional requirement of nucellus for embryogenesis can be different for different cultivars. The maximum CNR value in control was of Kinnow and the minimum CNR value was of Shamber. In radiation doses 3 to 12 Kr, the maximum CNR value was of cultivar Foster in 6 Kr and the minimum CNR value was in 12 Kr of cultivar Tangerine. The CNR values were different with 0, 3, 6, 9, 12 Kr within the same cultivar and among different cultivars. There were depression in embryogenesis above 9 Kr.
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How to cite this article:

Nafees Altaf, Ehsanullah Khan Marwat, Shahid Akbar Khalil and Inksar A.Bhatti, 2000. Effect of Gamma Radiation on Nucellar Embroyogenesis of Various Citrus Cultivars. Pakistan Journal of Biological Sciences, 3: 887-889.

DOI: 10.3923/pjbs.2000.887.889

URL: https://scialert.net/abstract/?doi=pjbs.2000.887.889

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