Crop Phenology and Seed Yield as Influenced by High Temperature Stress in Rice
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 6
Abstract
High temperature stress is one of the stresses, which adversely affects crop production. Being grown in narrow temperature range, a slight increase in the temperature will drastically reduce the yield of rice. It is important to study the impact of temperature stress, on seed yield attributing characters so as to develop mitigation strategies. Hence, the present investigation was carried out by raising five rice varieties viz., MDU 5, ASD 16, CO 51, Anna (R) 4 and ADT 43 in field condition at Coimbatore under two temperature regimes-high (summer, 2016) and normal (rabi, 2016) temperature in field condition, so as to explore its impact on crop phenology and seed yield. Except for plant height no significant influence of high temperature on vegetative growth of the plants were observed. Increased plant height was observed in case of high temperature conditions. Reduced leaf area and leaf chlorophyll index were also observed. Exposure of plants to high temperature also resulted in early flowering in all the varieties under testing. Total number of spike lets per panicle, number of filled seed per panicle and seed set were significantly lower in plants exposed to high temperature which ultimately resulted in lower seed yield.
Authors and Affiliations
Anil Sebastian, Selvaraju P
Keywords
Related Articles
- EP ID EP251927
- DOI -
- Views 118
- Downloads 0
MAGNITUDE OF HETEROSIS FOR YIELD AND ITS COMPONENTS IN HYBRID RICE (ORYZA SATIVA L.)
Performance of sixty F1 hybrids along with their 23 parents and three standard varieties was evaluated in a randomized complete block design with three replications during Sali, 2013. Significant variation was observed f...
Pattern of Marketing and Disposal of Potato in Lower Brahmaputra Valley Zone of Assam
Potato is a major food crop, has emerged as fourth most important food crop in India after rice, wheat and maize. Potato (SolanumtuberosumL.) popularly known as ‘The king of vegetables’, It has been observed that during...
Cultural, Morphological Variability Red Rot of Sugarcane in Shahjahanpur District of Uttar Pradesh
Sugarcane is an important cash crop and used as the chief source of sugar, grown in tropical and subtropical region in India. Sugarcane production is challenged by various biotic and abiotic stresses, among the biotic fa...
Response of Different Packaging and Storage Temperatures on Quality and Bioactive Compounds of Arils of Pomegranate cv. Bhagwa
Studies were conducted to evaluate the stability of arils of pomegranate cv. Bhagwa in different packaging and storage temperatures. Arils packed in PPMM (P3) recorded with high anthocyanin content (25.75 mg 100g-1) and...
Study of Hydroponic Systems and their Variations
Hydroponics is a method of agriculture using mineral nutrient solutions, in water, without the use of soil. Soil-based plants can be grown either with their roots in the mineral nutrient solution or in perlite or gravel,...