At the fourth dimension of the " efflorescence season " on the Qinghai - Tibet Plateau , Mrs. Li Yanping came to the clove base in Guide County , Hainan Tibetan Autonomous Prefecture , Qinghai Province . Mrs. Li Yanping is a older engineer at the Xining Forestry Research . She has been engaged in lilac cultivation and enquiry for a long time . She is very intimate with lilacs : " Manchurian Lilac is a rare tree diagram species in clove tree . When grafted on it , shrub lilac can also be planted as trees of which the appearance is beautiful and generous . The event of promoting planting is good , and it is more conducive to urban greening . For the lilac varieties that are difficult to bear or do not have a bun in the oven fruit , they are usually preserved by grafting . "

" Here we are principally responsible for for conserve lilac germplasm resource and cultivating new varieties . At nowadays , there are 100 lilac germplasm ingathering , totaling 36,000 plants , spring an independent clove germplasm resource protection system . " She said .

Over the years , with the efforts of a tumid number of experts , through the investigation of clove resources , variety assembling , option of worthy smorgasbord , and spawn technology research , Xining has institute the only lilac national forest Sir Herbert Beerbohm Tree germplasm resource depository financial institution in China . The original 18 species increase to 103 species , and 69 species can be bred .

Lilac bed sunlight , and its characteristic of tolerance to cold , drouth , and barrenness are peculiarly suitable for the soil and climate of Qinghai . It can be imbed anywhere , easy to survive , and can be planted in deal and vases . Lilac has been crop in Xining for hundred of geezerhood .

In the levelheaded glasshouse of the Xining Forestry Institute , the tune is bracing and the temperature is pleasant , and the lilac seedling explode their branches and leaves and grow vigorously .

" dissimilar kind of lilacs have different gene . There are many godforsaken lilacs with high ornamental value but are difficult to grow in nature . The institution of lilac germplasm resources bank can well protect and utilize lilac germplasm resources . " Mrs. Mao Ying , engine driver of Xining Institute of Forestry said : " Through tissue paper polish and graft methods to multiply fantastic lilacs , extract gamey - quality genes from savage diversity , and cross - breed lilac that are repellent to cold , drouth , pests and diseases , and have a longer anthesis period , which will add more verdure and peach to urban construction . "

However , many fantastic lilac varieties are at risk of infection of hazard or even extinction . " Many rarified lilac often live in the wild in abrasive environments . If they do n’t have suitable soil , they will not be able to take ascendant and even face the danger of defunctness , " said Mrs. Zhang Jinmei , music director of the Xining Forestry Institute .

The pale pink Pinnateleaf Lilac is a unparalleled lilac species in China . Due to its weak fertility and wearisome growth , it is almost extinct in the natural environs and is list as an endangered flora under interior third protection . so as to find specimen of Pinnateleaf Lilac , Mrs. Zhang Jinmei leads a squad to search for lilac every time the lilac bloom and even travels across the provinces .

In 2015 , in the Liancheng National Nature Reserve of Gansu , Mrs. Zhang and his workfellow finally find two wild Pinnateleaf Lilacs in a crack in a stone .

today , in the cultivation understructure of Xining Institute of Forestry , wrangle of transplanted Pinnateleaf Lilacs have grown to the stature of one person . The progress in relevant scientific inquiry not only " break the sparkler " for the large - scale promotion and planting of this endangered species , but also lays the origination for the subsequent cultivation of more splendid lilac varieties with more people of colour , longsighted flowering period , and excellent stress resistance .

In 2019 alone , Xining planted 1.48 million lilacs in the streets and bowling alley , and the stock of lilacs seedling exceeded 7.5 million . Xining has become one of the cities with more varieties of lilacs and a larger planting area in China .

" Preserving lilac germplasm , cultivate lilac variety , and raise lilac planting is the greatest significance of establishing a lilac germplasm resource bank . " Mrs. Li Yanping say .

germ : xinhua - rss.zhongguowangshi.com