A Guide to Accelerated Breeding Cycle in Chickpea to Enhance Rate of Gain

A Fikre, T Degefu, 'A Guide to Accelerated Breeding Cycle in Chickpea to Enhance Rate of Gain', ICRISAT, 2019

Speed breeding is time saving based approach and is amonggenetic improvement enhancers approach through geneticrecombination and fast generation reconstitution in plantbreeding. Genetic gain acceleration enables combating thegap between demand and supply. Dagnachew et al., (2016),have reported a positive yield and seed quality gain over thefour decades of Ethiopian chickpea research improvementendeavor. Increasing the number of generations per unit oftime (over a given period) improves the overall efficiency inthe delivery rate of defined variety or product/s. Amy et al.,(2018) have reported that under controlled environment ofgrowth chamber, speed breeding approach achieved up to 6generations per year for spring wheat (Triticum aestivum),durum wheat (T. durum), barley (Hordeum vulgare), chickpea(Cicer arietinum) and pea (Pisum sativum), and 4 generationsfor canola (Brassica napus), instead of 2?3 under normalglasshouse conditions.Under uncontrolled open field condition Asnake et al(unpublished) has reported 4 generations per year inchickpea, with possible further potential. It was also notedthat the approach can easily be adopted, integrated withother conventional and/or advanced breeding approacheslike molecular breeding. This manual tries to elaborate theapproaches /which is flexible/ in chickpea speed breedingwith the goal to achieve multiple generations per yearwithout losing breeding values (the useful attributes of theproducts). Single Seed Decent (SSD) Technique is preferredapproach along the speeding generation to be made in thecourse