@ARTICLE {EKANAYAKE:1992a, title = {Genotypic variation for root pulling resistance in potato and its relationship with yield under water deficit stress}, author = {Ekanayake, I. J. and Midmore, D. J. }, journal = {Euphytica}, year = {1992}, volume = {61}, number = {1}, pages = {43--53}, note = {RTB; Root and Tuber; Sweetpotato}, }