This paper also involves the problems of maize hybrid breeding.

文中还就涉及到的玉米杂优育种有关问题进行了讨论。

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The reasons of broad application of maize hybrid Yuyu 22 were studied from agricultural popularization perspective.

从农业推广学的角度，分析了豫玉22号得以大面积推广的原因。

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Correlation analysis was conducted on kernel water content and 10 ear characteristics of maize for 17 maize hybrid lines.

以17个玉米杂交组合为材料，对10个穗部性状和子粒含水量进行相关性分析。

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For example, the U.S. Agency for International Development (USAID) recently signed a Memorandum of Understanding with Ethiopia and DuPont to boost maize harvests through increased use of hybrid maize seed, improved seed distribution, and post-harvest storage.

FORBES: Mining and International Development: Partner or Pariah?

Souped-up hybrid crops, such as maize, bred through conventional techniques rather than high-tech genetic engineering, do not keep their desired properties from one generation to the next because of natural genetic shuffling.

ECONOMIST: Terminator genes

Zeneca's switch-hitting maize plants are now being tested to see how useful they are for hybrid-seed production.

ECONOMIST: Terminator genes