caa a22 4500 386326231 CHVBK 20180307111653.0 cr unu---uuuuu 161130e198904 xx s 000 0 eng 10.1017/S0014479700016756 doi S0014479700016756 pii (NATIONALLICENCE)cambridge-10.1017/S0014479700016756 Root Growth of Four Common Bean Cultivars in Relation to Drought Tolerance in Environments with Contrasting Soil Types [Elektronische Daten] Root growth of two drought tolerant and two drought sensitive bean (Phaseolus vulgaris L.) lines was compared at two locations in Colombia differing primarily in soil conditions. At Palmira, roots of drought tolerant lines reached a depth of 1.3 m, while drought sensitive lines only reached 0.8 m. These differences were associated with differences in seed yield, crop growth, canopy temperature and soil moisture extraction. Under acid soil conditions at Quili-chao, seed yields of supposedly drought tolerant genotypes were similar to those of the drought sensitive lines, and root growth of all four lines was restricted to less than 0.8 m. Drought avoidance through greater root growth and extraction of soil moisture appears to be an important drought tolerance mechanism in common beans, but its usefulness is limited where soil conditions restrict root growth. Copyright © Cambridge University Press 1989 Sponchiado B. N. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia White J. W. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia Castillo J. A. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia Jones P. G. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia Experimental Agriculture Cambridge University Press 25/2(1989-04), 249-257 0014-4797 25:2<249 1989 25 EAG https://doi.org/10.1017/S0014479700016756 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0014479700016756 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sponchiado B. N. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia NATIONALLICENCE 700 1- White J. W. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia NATIONALLICENCE 700 1- Castillo J. A. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia NATIONALLICENCE 700 1- Jones P. G. Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia NATIONALLICENCE 773 0- Experimental Agriculture Cambridge University Press 25/2(1989-04), 249-257 0014-4797 25:2<249 1989 25 EAG CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge