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BEIJING, July 15 (Xinhua) -- The Chinese Academy of Agricultural Sciences (CAAS) announced Friday that a group of international scientists has finished sequencing the genetic code of the potato.The Potato Genome Sequencing Consortium (PGSC), which is led by Chinese scientists and made up of 97 researchers from 14 countries, has sequenced the complete potato genome and published a report of its findings in the latest issue of the scientific journal Nature, said the CAAS.The research took six years and revealed that the potato contains about 39,000 genes, said the CAAS.Qu Dongyu, a potato farming specialist with the Crop Science Society of China and a promoter of the PGSC, said the study helped discover genes that define the growth and insect resistance of potatoes.The sequenced genome will enable scientists to create new varieties of potato that are high in yield and quality and more resistant to insects and diseases, he said.Huang Sanwen, a researcher with the CAAS and one of the three corresponding authors of the report, said the sequencing will also allow potato breeders to accelerate the breeding process of new seeds from 10 to 12 years to about 5 years.China is the world's top potato grower, with its farmers planting potatoes on nearly 90 million mu (6 million hectares) of land each year. The average yield per mu stands at 1,000 kg, only one-third of that harvested by countries with advanced technologies, Qu said.

BEIJING, July 17 (Xinhua) -- China's land prices in 105 cities rose 1.87 percent on average in the second quarter over the first, but the rate of growth slowed, the China Urban Land Price Dynamic Monitor, a land price information provider, announced Sunday. < In the second quarter, land price for business properties averaged 5,506 yuan (about 847 U.S. dollars) per square meter, up 2.77 percent from the previous quarter. The growth rate slowed by 0.56 percentage points.Land price for residential properties averaged 4,443 yuan per square meter, up 2.17 percent. The growth slowed by 0.27 percentage points. The price for industrial uses, meanwhile, was up 1.13 percent to reach 645 yuan per square meter. The growth fell 0.3 percentage points.The country's three most prosperous regions, the Yangtze River Delta Region, Pearl River (Zhujiang) Delta Region, and the Bohai Rim, all reported slower land price growth in the second quarter.

BEIJING, Aug. 22 (Xinhuanet) -- Researchers have discovered how a human egg captures an incoming sperm for fertilization, paving the way to help couples suffering from infertility, according to media reports on Monday.An international team of researchers found that a sugar chain known as the sialyl-lewis-x sequence (SLeX) makes the outer coat of the egg “sticky,” which has proven to be helpful in binding the egg and the sperm.As a result, this observation has filled in a huge gap in the understanding of fertility and provides hope for ultimately helping couples who currently cannot conceive.Scientists and doctors know that a sperm identifies an egg when proteins on the head of the sperm match and bind to a series of specific sugars in the egg’s outer coating. With a successful match of proteins, the outside surfaces of the sperm and egg then bind together before merging, which is then followed by delivery of sperm’s DNA into egg.To identify this molecules, the researchers used ultra-sensitive mass-spectrometric imaging technology to observe and identify which molecules are most likely to be key in the binding process.They experimented with a range of synthesised sugars in the laboratory and found that it is SLeX that specifically binds sperm to an egg.According to the World Health Organisation, infertility affects about 15 percent of reproductive-aged couples around the world and almost one in every seven couples in Britain has problems conceiving a child for various reasons.

JAKARTA, Sept. 21 (Xinhua) -- Comprehensive efforts are needed to save coral reefs as their living compound is prone to environmental damage, an Indonesian expert told Xinhua in an exclusive interview on Tuesday.Nurul Dhewani Mirah Sjafrie, coordinator of Coral Reef Information and Training Center (CRITC) for western Indonesia at the Indonesian Science Institute, the government think-tank institution, said that currently only more than five percent of coral reefs in Indonesia are in "excellent condition.""Based on monitoring of the thousands of observation stations we have, the rest are in damage, bad and moderate condition," Sjafrie said in her office.She said that it is not impossible to increase the number as long as all people are aware of the importance to save coral reefs."People should be aware that coral reefs live in sea with warm enough temperature of 18-25 Celsius degree with certain level of brightness, among others. If the requirements are fulfilled, we can see coral reef growing safely," said Sjafrie.She also said it needs upstream-to-downstream arrangement to support the efforts."For example, in western Indonesia, we have many big rivers. If illegal logging practice keeps continuing, it will cause sedimentation in the sea. It means there is a decreasing quality. So, coral reef salvation is not only conducted in ocean," Sjafrie said.She also expressed concern that many people dump garbage in rivers."They throw their garbage in plastic bags. For plastic only, it takes 100 years to be completely decomposed. Let's say 10-15 percent of our people do the malpractice everyday, you can imagine how many garbage entering the sea," she said.Sjafrie said that the key to guard coral reef sustainability is in human habit."Coral reef destruction could be caused by nature such as tsunami, earthquake, crown torn (Acanthaster plancii) that consumes coral reefs. But the biggest factor is human with their destructive fishing using bombs," she said.According to Sjafrie, people do the practice with three causes, namely ignorance, needs and greed.She added that efforts have been conducted by the government, private sector and non governmental organizations (NGOs) to save coral reefs."We have a program called the CORMAP of Coral Reef Rehabilitation and Management Program. The government uses instrument of National Program of People Empowerment while NGOs do their part. If we could combine the actions, we could reach the same goal," she said.She added that the government train people to be productive by providing skills and in the same time, her organization and NGOs socialize and campaign the importance of coral reefs."When people have better jobs and activities and they are equipped with the awareness, they will do positive thing and stop destroying the sea," Sjafrie said.

XICHANG, Sichuan, Aug. 12 (Xinhua) -- China launched a communications satellite PAKSAT-1R for Pakistan at 0:15 a.m. Friday from the Xichang Satellite Launch Center in southwest China's Sichuan Province.The satellite was carried by a Long March-3B carrier rocket, according to the launch center. It is China's first in-orbit delivery to Asian customers and also the first commercial satellite export to international users this year.According to statistics from the control center, the satellite successfully separated from its carrier rocket and entered geostationary transfer orbit as scheduled, 26 minutes after being launched.PAKSAT-1R will provide a range of services, including broadband Internet, telecom and broadcasting, covering some regions of Europe, South Asia, the Middle East, and the eastern Africa.The contract for the PAKSAT-1R was signed in 2008 between China Great Wall Industry Corporation and the Space and Upper Atmosphere Research Commission of Pakistan.China and Pakistan share a long history of space technology cooperation. Pakistan's first low-orbit satellite, BADR-A, was launched by China in 1990 with Long March 2E rocket.