Progesterone is a female hormone that is produced in the highest amount
after ovulation. Progesterone is very valuable during IVF cycles, and
can also be an important part of preventing miscarriage in older female animal
and in female animal with a history of miscarriage.
We has Progesterone Injection to promote development of the endometrium and glands, inhibits the contration of uterine muscles, stimulates the development of breast acini in preparation of lactation.
Pregnancy Medicine,Progesterone Injection Vet,Progesterone Injection for Animal,Animal Pregnancy Medicine Jiangxi Institute of Biological Products Inc. , http://www.jxinstitute.com
British Scientists Discover Gene Ppd-H1 That Controls Flowering Period in Barley
The John Innes (JIC) Center, a research institute at Norwich, England, made an important breakthrough on the 15th of the crop's flowering period. The results of the study will help understand how crops use sunshine hours to ensure that they bloom at the best time of the year. In a recent authoritative journal Science, the researchers described in detail a flowering gene associated with barley, Ppd-H1 (Photoperiod H-1), which controls the flowering period by controlling the genetic pathway of the photoperiodic response of barley. It is well-known that many plants always bloom at certain times of the year, but their causes are not clear enough. Today, researchers have discovered that plants have long used the surrounding environmental information to control their flowering period. Many functions, including barley, respond to the length of sunshine, and they use this information to determine their own flowering period. In fact, various varieties of barley or other crops respond to sunshine hours in different ways, and they generally adapt to different farming conditions through the diversity of varieties. The results of this study are surprising, and Dr. David Laurie and others have for the first time discovered and located the crop flowering related gene Ppd-H1. The gene can control some important reaction processes and also help to understand how plants use the sunshine hours to control the flowering period. In the current global climate change, Ppd-H1 gene helps breeders to develop new crop varieties that can adapt to a variety of agricultural environmental conditions. Some barley varieties are extremely sensitive to the response to sunshine during the spring and therefore bloom early in the summer. On the contrary, other slower varieties bloom later. Early flowering is advantageous in areas such as the Mediterranean where it is hot and dry in summer, so that plants can complete their life cycle before the onset of summer heat stress. In other places, such as England, the summer is cool and humid. Due to the long growth cycle, high yields can be obtained by late flowering. The mapping of the Ppd-H1 gene will help to discover more barley genes that survive in specific environments, which in turn will provide a better understanding of the crop's history and help the crops to thrive in the different environments of the world. Understanding. Research shows that the same genes may also play an important role in wheat and rice. If so, the Ppd-H1 gene may have a very important role in the domestication of wild species. Plants, like humans and many other creatures, have an internal biological clock. The circadian clock in barley regulates the activity of the CO (constans) gene, and the peak activity of the CO gene is consistent with the fact that the plant is exposed to long enough light. When the CO gene activates a gene called FT (flowering locus T) it stimulates flowering. The Ppd-H1 gene affects the time of day when the CO gene is expressed. Different genes have been found in late flowering barley. These genes cause the peak of CO expression to be delayed. Therefore, the FT gene can only be expressed when the daytime is long enough, otherwise it will delay flowering.