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 123
- Downloads 0
An Effect of Growth Regulators on Restriction of Umbel Orders in Seed Production of Onion cv CO (On) 5
A field experiment was conducted with onion cv. CO (On) 5 to study the effect of growth regulators spray on restriction of umbel orders on seed set percentage and seed quality in onion. The results revealed that among th...
EFFECT OF SEED PRIMING ON GERMINATION AND VIGOUR IN LOW AND HIGH LONGEVITY RICE GENOTYPES
Seed priming is a simple, low-cost, low-risk intervention and powerful technique to improve seedling emergence & vigour and yield of several crops. Three rice genotypes each in low (AC 35024, AC 39021, Gangavati Sona) an...
A PRIMARY APPROACH IN UNDERSTANDING THE BASIC ACCOMPLISHMENTS AND FUNCTIONING OF THE NUTRITION REHABILITATION CENTRES IN THE TELANGANA STATE
Malnutrition is a silent emergency and it is one of the most common causes of morbidity and mortality among children and adolescent throughout the world. Severe acute malnutrition (SAM) continues to be the reason for inc...
Extraction of Surface Water Bodies From Landsat 8 of Prakasam District of Andhra Pradesh
Surface water bodies are the major source for irrigation in India. Information on surface water bodies such as water spread area, volume of water stored in a water body is useful for understanding the availability of wat...
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,...