20 Dec Role of Climatic factors in Growth and Development of Vegetables
सब्जियों की वृद्धि और विकास में जलवायु कारकों की भूमिका Environment is defined as surrounding or everything outside the plant which influence the life of plant e.g. temperature, rain, light, humidity and soil etc. There are 3 major classes of environmental factors: Climatic factors like light, temperature, humidity, wind, rain and photoperiod, Topographic factors like Slope of particular place, altitude etc and Soil/Edaphic factors like soil pH, soil structure, texture, organic matter in soil The geographic distribution, plant growth and development are largely influenced by environment. If any environmental factor deviates from optimum requirement, it results in hindrance of plant growth and development by various means. For example, only plants requiring very small amount of water can live in deserts. The environmental stresses directly or indirectly leads to incidence of various plant growth affecting biotic or abiotic stresses. 1. Role of Temperature Temperature does not supply energy to plants, but controls rate of chemical reactions. It controls the plant development including morphogenesis and plant quality. Temperature, diurnal temperature-alternating day and night temperature and optimum temperature range have close relationship between yield and quality of vegetables. Effect of temperature on Plant Physiology Temperature is most important factor for plant growth because it has unique regulatory influences. Different metabolic responses, enzymatic activity, membrane permeability, substrate concentration and cumulative reactions are influenced. Water uptake...