Patinopecten yessoensis is good-sized mariculture scallop in the world. Its' economic value is highest among all the scallops. It was explanted to Changhai county of Dalian from Japan in 1982. After popularized cu...
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Patinopecten yessoensis is good-sized mariculture scallop in the world. Its' economic value is highest among all the scallops. It was explanted to Changhai county of Dalian from Japan in 1982. After popularized culture in the north areas of China, good economical benefits were obtained. Patinopecten yessoensis belongs to coldish shellfish. In 2003, in order to increase its' cultural scales
Scallop aquaculture in China has beeh growing rapidly in the past decades and there is a big scallop culture industry which plays an important role in the economic development of the coastal provinces in China. Chlamy...
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Scallop aquaculture in China has beeh growing rapidly in the past decades and there is a big scallop culture industry which plays an important role in the economic development of the coastal provinces in China. Chlamys farreri and Argopecten irradians are the important cultured scallop species which are cultured widely in the northern coastal provinces. Recently, scallop culture in China is experiencing from a mortality problem, and suffering from a great economic loss.
Filtration rate is one of very important physiological index of filter feeding bivalves. Nowadays, there are two kind of method on measuring it: direct and indirect methods. Flow-through chamber method is one of tradi...
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Filtration rate is one of very important physiological index of filter feeding bivalves. Nowadays, there are two kind of method on measuring it: direct and indirect methods. Flow-through chamber method is one of traditional indirect method that filtration rate is obtained by time the concentration of food and the clearance rate. Biodeposits method belong to direct method which calculated
The insect pest Brown planthopper (BPH)is one of the key constraints on increasing rice production. Growth, development and reproduction of BPH are very different when the insects feed on rice varieties with different...
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The insect pest Brown planthopper (BPH)is one of the key constraints on increasing rice production. Growth, development and reproduction of BPH are very different when the insects feed on rice varieties with different, resistance levels. To investigate the molecular response of BPH to ingestion of BS, a highly resistant rice line, and MH63, a moderately resistant rice variety, cDNA-amplified fragment length polymorphism (cDNA-AFLP): experiments were firstly carried out to analyze the differentially expressed transcripts in the fourth instar BPH nymphs. Compared with that in BPH reared on susceptible rice susceptible rice Taichung Native 1 (TN1), of 2800 transcripts analyzed, 76 cDNA bands, were up-regulated and eight bands down-regulated
Maize is one of the most important three crops and forage in China. According to the increasing of the yield the genetic improvement plays an important role, whose effect is about 35%～40%, and it was due to the uses ...
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Maize is one of the most important three crops and forage in China. According to the increasing of the yield the genetic improvement plays an important role, whose effect is about 35%～40%, and it was due to the uses of heterosis. Because of the narrow germplasm and lack of basic study on heterosis, the yield of maize increased slowly. The classification of heterotic groups is essential to maize breeding because knowledge of heterotic groups could be interest to both the combination of outstanding hybrids and the improvement of elite inbred lines. The study on the
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