{"product_id":"common-bean-improvement-von-clare-mukankusi","title":"Common Bean Improvement","description":"\u003cp\u003eFusarium root rot (FRR) is an important soil-borne  disease of common bean worldwide. In Africa, minimal  or no control measures are applied resulting in  heavy yield losses. Popular varieties are  susceptible and resistant ones have undesirable  traits. Four isolates were tested for pathogenicity  and one, FSP-3, subsequently utilised in screening  trails to identify resistant varieties. Two soil  compositions, i) 50% swamp soil:50% forest soil  composition and ii) forest soil, and two irrigation  schedules i) once a week and ii) daily, categorized  varieties most distinctly according to their  reaction to FRR. 147 common bean varieties were  evaluated in a screenhouse and 46 of these in the  field. Nine varieties were selected as sources of  resistance. Evaluation of 66 F1 and F2 populations  plus reciprocals showed that FRR resistance was  mainly governed by additive genes with a few crosses  displaying significant SCA effects. Significant  maternal effects and non-maternal were observed.  Number of resistance genes varied from 2-9, allelism  test suggested presence of many loci governing this  trait. Heritability (H) varied from 0.22-0.69 and h2  was estimated at 0.35-0.49.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838389257\"\u003e\u003ch3\u003eImproving resistance to Fusarium root rot (Fusarium solani  f. sp. Phaseoli) in Common bean  (Phaseolus vulgaris L.)\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838389257","offer_id":39498949525597,"sku":"9783838389257","price":79.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/81de6cdd-84ec-4b55-b190-2e29e4081936.jpg?v=1758345502","url":"https:\/\/shop.autorenwelt.de\/en\/products\/common-bean-improvement-von-clare-mukankusi","provider":"Autorenwelt Shop","version":"1.0","type":"link"}