Kusintha kwanyengo ndi kukwera msanga kwa chiwerengero cha anthu zakhala zovuta zazikulu pachitetezo cha chakudya padziko lonse lapansi.Njira imodzi yodalirika ndiyo kugwiritsa ntchito makina owongolera kukula kwa mbewu (PGRs) kuti achulukitse zokolola komanso kuthana ndi mikhalidwe yosavomerezeka monga nyengo yachipululu.Posachedwapa, carotenoid zaxin ...
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