Điều này Link không tồn tại trong ngôn ngữ của bạn, Xem trong: English (en),
Hoặc dùng Google Translate:  

infohub.practicalaction.org/bitstream...e4f5bb.pdf

Community-based seed multiplication of open-pollinated varieties (OPV) can mitigate against hybrid seed unavailability and its soaring cost thereby increasing access to standard seed for communal areas, especially in drought prone areas.