Effect of different explants on callus induction and differentiation of perennial ryegrass

摘要

Perennial ryegrass,in north China,is the most important forage and turf grass that plays an extensive role and is used in many fields.At present,cultivated area of perennial ryegrass is expanded faster than other grass cultivars due to its great quality,such as longer green period,heat resistant, high yield etc.Transgene as a utility tool provides a new means to improve culture quality.Accordingly, it is of importance to establish a high efficiency system of callus induction and differentiation.