British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.
Tim Flowers and Tony Yeo, from Sussex University’s School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty.
The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice.
It is estimated that each year more than 10m hectares (公顷) of agricultural land are lost because salt gets into the soil and stunts (妨碍生长) plants. The problem is caused by several factors. In the tropics, mangro
A. They are students at Sussex University.
B. They are rice breeders.
C. They are husband and wife.
D. They are colleagues at an institution of higher learning.
British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.
Tim Flowers and Tony Yeo, from Sussex University’s School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty.
The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice.
It is estimated that each year more than 10m hectares (公顷) of agricultural land are lost because salt gets into the soil and stunts (妨碍生长) plants. The problem is caused by several factors. In the tropics, mangro
A. They are students at Sussex University.
B. They are rice breeders.
C. They are husband and wife.
D. They are colleagues at an institution of higher learning.
"Copper" and "bobby" are two of several nicknames that the English policeman has. And "peeler" was the early nickname for the policeman, but this one has died out. Of course, among the criminal part of the community where the police are given more derogatory (贬损的) nicknames which originated in America, such as "fuzz" or "pig".
Visitors to England seem, nearly always to be very impressed by the English police. They are usually very friendly and have helpful sort of character. In London, the policemen spend so much of their time directing visitors about the city that one wonders how they ever find time to do anything else!
Two things are immediately noticeable to the stranger, when he sees an English policeman for the first time. The first is that he does not carry a pistol and the second is that he wears the policeman’s helmet. From time to time it is suggested that the policeman should be given a pistol and t
A. There are fewer criminals in America than in Britain.
B. The English police usually leave a deep impression on visitors.
C. The British bobby is friendly but not helpful.
D. The English police enjoy having pistols.
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