Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.)

Girjesh KUMAR; Prashant Kumar RAI

Article Details

Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.)

Authors:

Girjesh KUMAR | Prashant Kumar RAI

Publisher:

TUBITAK

Journal:

Turkish Journal of Biology 2009 Vol.33 Issue 3, pp.195-204

Document Type:

Article

Publication Date:

2/2009

Document Language:

Turkish

Document ID (Org No.):

2000813175

Frequency:

Bimonthly

eISSN:

1303-6092

pISSN:

1300-0152

Keywords:

Abstract:

 

Gamma irradiation can induce beneficial as well as deleterious impacts on chromosome behavior in crop plants. The cytogenetic changes occurring due to the storage of inbred seeds after gamma irradiation in the somatic and gametic cells of Zea mays L. were investigated in this study. A wide spectrum of chromosomal anomalies was encountered in somatic and gametic cells of maize that are gamma irradiated, stored (aged), and treated with a combination of both of these treatments. Gamma rays and ageing treatments induced a number of chromosomal anomalies independently, but a combination of the 2 treatments suppressed the frequency of chromosomal anomalies considerably in somatic as well as gametic cells of maize. It is evident from our study that the decrease in mitotic index was inversely proportional to the increase in doses in all the sets of gamma rays and ageing treatments. The conclusion drawn from our study is that individual treatment of gamma rays induced the highest percentage of chromosomal abnormalities, followed by the combination treatment of ageing and gamma rays, and the least number of abnormalities were induced by the individual treatment of ageing. Hence, the combination treatment proved to be better in the mechanism of genetic repairing, which is discussed in the present study.

 

Gamma irradiation can induce beneficial as well as deleterious impacts on chromosome behavior in crop plants. The cytogenetic changes occurring due to the storage of inbred seeds after gamma irradiation in the somatic and gametic cells of Zea mays L. were investigated in this study. A wide spectrum of chromosomal anomalies was encountered in somatic and gametic cells of maize that are gamma irradiated, stored (aged), and treated with a combination of both of these treatments. Gamma rays and ageing treatments induced a number of chromosomal anomalies independently, but a combination of the 2 treatments suppressed the frequency of chromosomal anomalies considerably in somatic as well as gametic cells of maize. It is evident from our study that the decrease in mitotic index was inversely proportional to the increase in doses in all the sets of gamma rays and ageing treatments. The conclusion drawn from our study is that individual treatment of gamma rays induced the highest percentage of chromosomal abnormalities, followed by the combination treatment of ageing and gamma rays, and the least number of abnormalities were induced by the individual treatment of ageing. Hence, the combination treatment proved to be better in the mechanism of genetic repairing, which is discussed in the present study.

Article Details

Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.)

Authors:

Girjesh KUMAR | Prashant Kumar RAI

Publisher:

TUBITAK

Journal:

Turkish Journal of Biology 2009 Vol.33 Issue 3, pp.195-204

Document Type:

Article

Publication Date:

2/2009

Document Language:

Turkish

Document ID (Org No.):

2000813175

Frequency:

Bimonthly

eISSN:

1303-6092

pISSN:

1300-0152

Key words: Zea mays

gamma irradiation

storage

mitosis

meiosis

chromosomal anomalies

Issues

Article Details

Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.)

Authors: Girjesh KUMAR | Prashant Kumar RAI

Publisher: TUBITAK

Journal: Turkish Journal of Biology 2009 Vol.33 Issue 3, pp.195-204

Document Type: Article

Publication Date: 2/2009

Document Language: Turkish

Document ID (Org No.): 2000813175

Frequency: Bimonthly

eISSN: 1303-6092

pISSN: 1300-0152

Key words: Zea mays

gamma irradiation

storage

mitosis

meiosis

chromosomal anomalies

Issues

Authors:

Girjesh KUMAR | Prashant Kumar RAI

Publisher:

TUBITAK

Journal:

Turkish Journal of Biology 2009 Vol.33 Issue 3, pp.195-204

Document Type:

Article

Publication Date:

2/2009

Document Language:

Turkish

Document ID (Org No.):

2000813175

Frequency:

Bimonthly

eISSN:

1303-6092

pISSN:

1300-0152