Physiological and biochemical responses of rice (Oryza sativa L.) genotypes grown under fifty percent shading conditions
| dc.contributor.advisor | Shankhdhar, S.C. | |
| dc.contributor.author | Tamta, Akashdeep | |
| dc.date.accessioned | 2021-03-17T09:18:50Z | |
| dc.date.available | 2021-03-17T09:18:50Z | |
| dc.date.issued | 2021-02 | |
| dc.description.abstract | Rice (Oryza sativa L.) is imperative to the greater part of the world's population. It serves as most consumed cereal crop by mankind. Temperature, solar radiation, rainfall, pH, relative humidity and wind directly impacts the production and various growth stages during its developmental stages. Intensity of light determines the basic character of rice growth and development. Continuously cloudy weather and rain fed conditions particularly during grain filling period result in low quality of grain and loss in yield, yield attributes. For Physiological and biochemical responses of rice (Oryza sativa L.) genotypes were grown under fifty percent shading at B1 Block of Dr N. E. B CRC and department of Plant Physiology of GBPUA&T Pantnagar during kharif season 2019 with different rice genotype, namely IET 27570, IET 27571, IET 27572, IET 27577, IET 27581, IET 27584, IET 27586, IET 27588, IET 26687, IET 27590, IET 27592, IET 27595, IET 27596, IET 27597, IET 27598, IET 27559, Swarnaprabha and IR-8.These genotypes were transplanted in two blocks, one for control and another block for imposing low light stress by covering the block with 50 % shade net supported by bamboo sticks and both the entry ends were open for sufficient ventilation. Among 18 genotypes only seven genotypes attained maturity namely IET 27572, IET 27584, IET 27588, IET 27590, IET 27592, IET 27559 and Swarnaprabha. Among all parameters it was found that except plant height and chlorophyll content, all the parameters reduced significantly under low light stress. Some genotypes showed tolerance for low light stress and some were found to be susceptible. Finally the grain yield, harvest index and number of filled spikelet indicated that low light stress adversely affected these parameters.Genotype IET 27588 was found to be tolerant for low light stress and performed better because it attained highest grain yield, harvest index and spikelet fertility under the low light stress condition, followed by moderately tolerant genotypes IET 27592. | en_US |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810162537 | |
| dc.keywords | plant physiology, biochemistry, rice, genotypes, shading | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 118 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Rice | en_US |
| dc.sub | Plant Physiology | en_US |
| dc.theme | Genotypes | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Physiological and biochemical responses of rice (Oryza sativa L.) genotypes grown under fifty percent shading conditions | en_US |
| dc.type | Thesis | en_US |