VIABILITY ASSESSMENT THROUGH TZ TEST OF SEEDS, COLLECTED FROM DIFFERENT AGRO CLIMATIC ZONES OF INDIA

Despite some studies on some provenances, a systematic documentation of morphological & physiological characteristics of seed available in different agro climatic regions in India, is lacking. Many specific questions about its production, commercialization and genetic improvement work are still in their infancy. Moreover before exploiting any plant for industrial application, it is imperative to have complete information about its seed viability pattern so that the potential of plant could be utilized maximally. Result of the present investigation revealed that potential viability, as estimated by TZ test is significantly and positively correlated with actual germination percentage in seeds. So the TTC staining method can be recommended for evaluation of seed viability in seed