Different crops require different climatic conditions, temperature and photoperiods for their growth. Photoperiods are related to sunlight and ultimately with weather. Some crops grow well in rainy season (Kharif crops) while others grow well in winter season (Rabi crops).
Also, because weather conditions such as occurence of droughts and flood situations are unpredictable, varieties that can be grown in diverse climatic conditions are useful.
Factors:
- Higher yield
- Improved quality
- Biotic and Abiotic resistance
- Change in maturity
- Wider adaptability
- Desirable agronomic characteristics.
