Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by Sonu Goyal
Total Records ( 4 ) for Sonu Goyal
  Sonu Goyal , Mohammad Rafiq Wani and Samiullah Khan
  Background and Objective: Chlorophyll mutation frequency is useful in assessing the potency of a mutagen. Hence, scoring of chlorophyll mutations are dependable indices for evaluating the genetic effects of mutagenic treatments. Present investigation was undertaken to understand the response of urdbean varieties T-9 and Pant U-30 to individual and combined treatments of gamma rays and EMS for identifying such mutagenic treatments causing maximum chlorophyll mutations which could be exploited for inducing beneficial viable mutations in subsequent generations. Materials and Methods: Seeds of two urdbean varieties were irradiated with 100, 200, 300 and 400 Gy doses of gamma rays. For chemical treatments, seeds were treated with 0.1-0.4% of EMS for 6 h and for combination treatments, dry seeds of each variety were first irradiated with gamma rays at 200 and 300 Gy followed by the treatment with 0.2 and 0.3% of EMS. The mutagen treated seeds were sown in complete randomized block design to raise M1 generation. The M1 seeds were sown in next season in plant progeny rows for raising M2 generation. Chlorophyll mutations were observed when seedlings were 8-15 days old in M2 generation. They were identified and classified according to Gustafson’s method. Results: Six kinds of chlorophyll mutants viz., albina, chlorina, maculata, xantha, virescent and viridis were recorded in M2 generation when seedlings were 7-15 days old. Out of the six chlorophyll mutation types, albina, chlorina and xantha survived upto 7-15 days only, while the other three types were viable and set seeds. Gamma rays alone as well as in combination with EMS produced large number of albina mutations, while EMS alone induced the maximum number of chlorina mutations in both the varieties. Frequency of chlorophyll mutations was dose dependent and increased with increasing dose of each mutagen. The combined treatments of gamma rays+EMS produced higher frequency of chlorophyll mutations as compared to their individual treatments. Conclusion: Chlorophyll mutations could be exploited for identifying the threshold dose of a mutagen that would increase the probability of retrieving economically useful mutations in ensuing generations.
  Sonu Goyal and Samiullah Khan
  Breeding programmes to improve nutritious pulse crop have not been commensurate with its role in the Indian diet. Induced mutations have played a great role in increasing world food security, since new food crop varieties embedded with various induced mutations have contributed to the significant increase of crop production. Though, the crop improvement work on urdbean (Vigna mungo L. Hepper) has been in progress for several years at various state Agriculture universities and ICAR institutes in India, the programmes lacked systematic and coordinated efforts. It was only after 1967 that the crop along with other pulses started receiving thrust under the All India Coordinated Programme on Improvement of Pulses (AICPIP). Plant breeding requires genetic variation of useful traits for crop improvement. Mutagenic agents, such as radiations and certain chemicals, can be used to induced mutations and generate variation from which desired mutants may be selected.
  Sonu Goyal , Mohammad Rafiq Wani and Samiullah Khan
  Background and Objective: The nature and extent of genetic variability available within the species forms the basis for effective selection. Present study was aimed at to explore the possibility of inducing genetic variability in M2 and M3 generations of urdbean following mutagenesis with individual and combination treatments of gamma rays and ethyl methanesulfonate (EMS) for selecting enviable early flowering and maturing lines for late spring season. Materials and Methods: Physically, seeds of two varieties of urdbean were irradiated with 200 and 300 Gy doses of gamma rays at NBRI, Lucknow. For chemical treatments, seeds were treated with 0.2 and 0.3% of EMS for 6 h and for combination treatments, dry seeds of each variety were firstly irradiated with 200 and 300 Gy doses of gamma rays followed by the treatment with 0.2% of EMS. The mutagen treated seeds were sown in complete randomized block design to raise M1 generation. The M1 seeds were sown in plant progeny rows to grow M2 generation. The 10 M2 progenies showing significant negative deviation in mean values from their respective controls particularly for flowering and maturity were selected to raise M3 generation. Analysis of variance was performed to assess the extent of induced variation for both the traits. Results: Data for days to flowering and maturity in M3 generation had resulted in reducing the flowering and maturity period by more than four days after mutagenic treatments in both the varieties. Combination treatments were found to be more effective in reducing the flowering and maturity period than the individual treatments of gamma rays and EMS. Genotypic coefficient of variation (GCV), heritability (h2) and genetic advance (GA) increased manifold in the treated population. Conclusion: The quantitative traits (flowering and maturity) exhibited higher genetic variability in M2 as compared to M3 generation indicating that potential gain could be achieved through selection in early (M2) generation.
  M. Imran Kozgar , Sonu Goyal and Samiullah Khan
  Ethylmethane sulphonate (EMS) has been long considered as a potential chemical mutagen for inducing genetic variability in crop plants. This study tries to elucidate out the effect of different doses (0.1 to 0.4%) of EMS on the two species of genus Vigna thereinafter V. radiata and V. mungo in M1 and M2 generations for isolation of putative mutants and their respective comparative studies. Selection of mutants is based upon the variation in genetic parameters for yield and certain yield contributing characters. The comparative studies on the estimation of total seed protein content and nitrate reductase (EC 1.7.99.4) activity, NRA, in both generations of these two species have also been studied in order to reveal the potentiality of mutants to be isolated for raising M3 generation. In the present study, a better variant doses of, EMS were found to be very effective in generating mutation for higher yield in both species and there was a linear correlation of the total seed protein content to NRA and the total plant yield. The accuracy of the selected mutants in M2 generation was satisfactorily evaluated and would help in isolating wide range of mutant pools accurately to larger extent in shorter duration.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility