Morphological and biochemical variability amongst parents and hybrids of oyster mushroom
| dc.contributor.advisor | Singh, R.P. | |
| dc.contributor.author | Prasad, Meenakshi | |
| dc.date.accessioned | 2018-11-01T06:10:54Z | |
| dc.date.available | 2018-11-01T06:10:54Z | |
| dc.date.issued | 2008-06 | |
| dc.description.abstract | Oyster Mushroom (Pleurotus species) is one of the choice edible mushrooms grown in India as well as in World having high nutritive value and manifold uses. This mushroom contributes about 14.2 per cent of the total world mushroom production (6.16 million tonnes). However, share of this mushroom in mushroom production of India is hardly 6 per cent. Besides other factors, the strains play a most valuable role on yield and quality at diverse environmental conditions. Genetic manipulation of fungi is vital to meet the demand of the industrial world for fast growing and high yielding strains. The introduction of new strains through hybridization is thus required to maintain the production of quality mushroom. Considering the importance of strains in mushroom production, the present investigations were undertaken to identify and evaluate the parents and hybrids of Oyster mushroom in terms of qualitative (morphological and bio-chemical) and quantitative (yield) variability. A total of available species of ten parents and thirteen Pleurotus hybrids, finally five parents viz. P. sajor-caju (Fries) Singer, P. djamor (Fr.) Boedjin var. roseus, P. florida (Eger), P. flabellatus (Berk & Br.) Sacc, and H. ulmarius (Singer) and their four hybrids A1B5 (P. sajor-caju × P. djamor), A1C2 (P. sajor-caju × P. florida), A11D6 (P. sajor-caju × P. flabellatus) and F4H4 (P. florida × H. ulmarius) were selected on the basis of their yield and quality parameters. The selected parents and hybrids were studied for cultural variability on solid MEA medium. Mycelial growth rate of Pleurotus hybrids were recorded significantly higher or at par with their respective parents. Maximum growth (64.33 mm) and growth rate (8.04 mm/day) was recorded for the hybrid A1C2. Comparative colony characters were studied also on MEA medium viz. colony appearance, colour, shape, zonation, margin, exudates produced or not. The selected parents and hybrids varied significantly among themselves in terms of their colony characters. Macro-morphological & qualitative differences among the fruiting bodies of selected parents and hybrids were studied selecting ten fruit bodies randomly starting from first flush. Stipe length was found minimum in hybrid A1C2 (3.10 cm), Pileus length was found maximum in hybrid A11D6 (7.77cm) while Pileus width was found maximum in hybrid A1C2 (8.20 cm). On the basis of yield performance, the hybrid of P. sajor-caju × P. florida i.e. A1C2 found to be best by producing maximum yield (1536.90g/kg dry substrate) and fruit bodies (140.60 in number) followed by A11D6 hybrid of P. sajor-caju × P. flabellatus yield (1150.84 g/kg dry substrate) and fruit bodies (113.51 in number). The data of bio chemical constituents of the fruiting body of Pleurotus spp. (parents and hybrids) revealed that all the Pleurotus spp. contained low total soluble sugars (15.25-17.81 per cent on dry weight basis) and high protein content (23.42-28.75 per cent on dry weight basis). Amongst all, the hybrid of P. sajor-caju × P. florida i.e. A1C2 has lower total soluble sugars (15.25 per cent) and higher protein content (28.75 per cent). | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810082652 | |
| dc.keywords | plant morphology, biochemistry, heredity, hybrids, mushrooms | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 126 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Mushrooms | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | Genetics | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Morphological and biochemical variability amongst parents and hybrids of oyster mushroom | en_US |
| dc.type | Thesis | en_US |