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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue Nov 2014, 35 (6)                                     Back


nstantaneous and historical temperature effects on a-pinene

Antioxidative enzymes and biochemical changes in paclobutrazol induced flowering in mango (M. indica) cultivars 

 

Pooja Saxena1, V.K. Singh1 and Neelam Pathak2

1Central Institute for Subtropical Horticulture, Rehmankhera, Lucknow-227 107, India

2Integral University, Kursi Road, Lucknow-226 026, India

*Corresponding Author?s Email : psbiochem@gmail.com

 

  

 

 

Publication Data

Paper received:

14 March 2013

 

Revised received:

06 September 2013

 

Accepted:

11 October 2013

 

Abstract

A study was conducted to examine the level of nonstructural carbohydrate, protein concentration and the activity of antioxidative enzymes viz. catalase and peroxidase in buds of different stages (Stages : I-before flower bud differentiation, II- flower bud differentiation, III-bud burst, IV- panicle elongation) and their adjacent leaves of biennial (Chausa, Dashehari, Langra) and the? regular (Amrapali) cultivars. In the present study, Amrapali being the regular cultivar, contained higher levels of total and reducing sugar (4.49 to 12.67 mg g-1 f.wt.) and protein content (1.90 to 6.78 mg g-1) in all the developmental stages of flowering as compared to biennial cultivars. However, in leaves gradual reduction in sugar and protein content was noticed in the advance stages of flowering. Paclobutrazol (2-8 g.a.i.), a flower inducing chemical, enhanced the catalase and peroxidase activities over the untreated control and maximum enhancement was recorded at 8 g.a.i. On the other hand, decreasing trend of protein with paclobutrazol treatment was recorded in adjacent leaves of flower buds. The results implicated the possible role of catalase and peroxidase and other associated biochemical changes in paclobutrazol induced flowering in mango.

 

Key words

 

 

Antioxidative enzymes, Biochemical parameters, Flower bud differentiation, Mango cultivar, Paclobutrazol

 

 

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