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Journal Cover Journal of Plant Breeding and Genetics
  [11 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 2308-121X - ISSN (Online) 2305-297X
   Published by eSci Journals Publishing Homepage  [8 journals]
  • BREEDING DROUGHT RESISTANCE IN FIG VIA CONTROLLED HYBRIDIZATION

    • Authors: Ahmad A. Rostami, Majid Rahemi, Sahar Sedaghat
      Pages: 55 - 67
      Abstract: This study as a part of a fig drought tolerance breeding program, was conducted to evaluate the effects of pollen sources and maternal plants on drought tolerance of first generation seedlings. Three Iranian cultivars were selected as maternal plants from hot dry lands of central Iran and cross pollinated with four Iranian caprifigs. The offsprings were subjected to drought stress by stopping irrigation for 15 days and reirrigated for 10 days to screen drought tolerance. The results indicated hybrids 1, 7, 8, 9 and 11 were able to preserve water status and growth rate at higher levels during the water stress period. These hybrids were able to accumulate higher concentrations of proline and soluble carbohydrates for osmoregulation and prevent structural damages under water stress. It was concluded that drought tolerance in fig offsprings is highly related to drought tolerance of their parents, and using a highly drought tolerant parent in controlled pollinations may result in a drought tolerant hybrid. Hence, using caprifig ‘Khormaei’ as paternal parent and fig ‘Siah’ or ‘Sabz’ as maternal parent in controlled pollinations to obtain drought tolerant fig hybrids was suggested.
      PubDate: 2017-05-27
      Issue No: Vol. 4, No. 3 (2017)
       
  • DISSECTING GENETIC DIVERSITY IN GARCINIA XANTHOCHYMUS USING ISSR AND RAPD
           MARKERS

    • Authors: Jayesh S. Anerao, Vikas Jha, Lina Korgaonkar, Shanmuganan P. Devi, Nitin Desai
      Pages: 69 - 76
      Abstract: Western Ghats of India is one of the megadiversity centres in the world. There are 15 species of Garcinia reported of which many are endemic in nature. The genetic diversity in one of the same endemic species Garcinia xanthochymus was evaluated using ISSR and RAPD markers. A total of 15 individual plants from each location was analyzed. Six populations of G. xanthochymus were collected and screened using 16 ISSR and 10 RAPD markers. ISSR primers generated 80 bands of which 17 were polymorphic (21.25 % polymorphism) and RAPD primers produced 51 total bands of which 18 were polymorphic (35.29 % polymorphism). The ISSR and RAPD cluster analysis grouped them into two groups. The detected polymorphism is enough at species level and therefore the RAPD and ISSR can be used as efficient markers for genetic relatedness assessment in G. xanthochymus. The UPGMA and PCoA analysis distantly grouped these populations in two groups. The genetic diversity within the population is an important to source for the evolution of the genera. G. xanthochymus has distinct populations in different geographical area.
      PubDate: 2017-05-27
      Issue No: Vol. 4, No. 3 (2017)
       
  • GENE ACTION AND COMPARISON BETWEEN HALF DIALLEL ANALYSES METHODS UNDER
           SALINE SOIL STRESS CONDITIONS IN SUNFLOWER

    • Authors: Mohamed A.A. EL-Satar
      Pages: 77 - 92
      Abstract: A half diallel cross between five parental sunflower genotypes was evaluated under two contrasting locations of Kafr El-Hamam and Tag Al-Ezz replications. Highly significant genotypes and their components mean squares Agricultural Research Stations using randomized complete block design with three were detected for all studied traits at both and cross locations. Variance of additive, non-additive and experimental error for all studied traits computed by Griffing (1956), Gardner and Eberhart (1966) and (Jones, 1965) was numerically identical; and it was confirmed by F. test. Whereas, Hayman’s analysis differed from the other analyses. Selection in early generations would be effective for improving days to 50 % flowering, days to physiological maturity, plant height, head diameter, No. of green leaves plant-1 and seed oil content, but the remaining traits showed an opposite trend. The parent L125 behaved as the best combiners for seed weight plant-1 and one or more of its components. The cross L460 χ L335 was found to be superior and exhibited highest SCA effects and heterosis for seed weight/plant and one or more of its attributes.
      PubDate: 2017-05-27
      Issue No: Vol. 4, No. 3 (2017)
       
 
 
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