For 14 CIMMYT maize population, 56 hybridized combinations were made by using incomplete dual cross.

对来自CIMMYT的14份玉米群体，按不完全双列杂交组配56个杂交组合。

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For 12 domestic maize population, 48 hybridized combinations were made by using incomplete dual cross.

对国内12份有代表性的玉米群体材料，按不完全双列杂交组配48个杂交组合。

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To study the quality improvement of maize population is significantly for the development of germplasm and quality improvement .

研究群体的品质改良，对拓展我国玉米种质基础及改善品质含量具有重大意义。

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Consumption of wheat, rice and maize roughly tracks population growth but at a higher level, so demand for them will add about a billion tonnes to the 2 billion produced in 2005-07.

ECONOMIST: The answer is less straightforward than it seems

More than three-quarters of the Honduran population's daily calorie consumption comes from maize and beans, and Mitch destroyed an estimated 60% of these crops.

ECONOMIST: Research from the ground up

On one reckoning, in order to keep up with population growth farmers will have to grow more wheat and maize over the next 40 years than was grown in the previous 500.

ECONOMIST: The answer is less straightforward than it seems