This paper develops a theoretical model for analyzing gene bank management decisions regarding the search for traits of economic value in ex situ collections of wheat. The model is applied to data on the probability of ...

1986-90. Overall, varieties originating directly from CIMMYT crosses or from NARS crosses using a CIMMYT parent occupy 40 million hectares of wheat in the developing world. It is estimated that adoption of MVs from 1977 ...

Wheat has traditionally been planted in solid stands, especially in irrigated environments and rainfed production systems with moderate to high rainfall. Wheat is usually planted by either drilling closely spaced rows 10-30 ...