How to pay attention to the collection and preservation of germplasm resources.

With the increasing attention of the government and research institutions, the collection of germplasm resources has been paid more and more attention on the basis of full investigation of domestic and foreign resources. The increase of information dissemination channels and the acceleration of information dissemination have strengthened the collection and introduction of germplasm. The introduction of new varieties of deciduous fruit trees, especially apples (by 1989, China had introduced 2 17 varieties) is an obvious example.

How to properly preserve the collected germplasm, especially the preservation method, is one of the key contents of germplasm resources science. At present, in addition to the traditional preservation of germplasm resources planted in the resource park as a whole, a set of methods for germplasm preservation, which are labor-saving, time-saving, less land occupation, more germplasm preservation, long preservation time, stable, safe and reliable, have been established by using modern technologies such as scion refrigeration, tissue culture preservation, tissue cryopreservation and pollen preservation, and a lot of research has been done, and remarkable progress has been made. Genetic engineering technology also shows a broad prospect for the preservation of germplasm resources, which is the future hope of germplasm resources preservation method-gene bank preservation method, that is, the germplasm genes to be preserved are carried on virus or plasmid vectors for long-term, stable, safe and reliable preservation, and when necessary, the target genes are directly transferred into propagators for expression.