caa a22 4500 477133746 CHVBK 20180405111711.0 cr unu---uuuuu 170330e19971101xx s 000 0 eng 10.1023/A:1003014629029 doi (NATIONALLICENCE)springer-10.1023/A:1003014629029 Potato germplasm development for warm climates: genetic enhancement of tolerance to heat stress [Elektronische Daten] [Richard Veilleux, Margarita Paz, David Levy] Complex potato hybrids were derived through unilateral sexual polyploidization between Solanum tuberosum cv. Atlantic and 11 diploid hybrids that produced 2n pollen through co-orientation of second division spindles. The hybrids represented the following genomic compositions: TAPB, TAPC, and TAPM where T = S. tuberosum, A = S. andigena, P = S. phureja, B = S. berthaultii, C = S. chacoense, and M = S. microdontum. The B, C, and M components of the hybrids had been selected from heat tolerant accessions. The heat tolerance and agronomic performance of the hybrids were assessed under both controlled environments and field tests. The hybrids exhibited good tuberization potential (tuber number, tuber weight and percent plants producing tubers) under heat stress conditions in controlled environments. Under severe heat stress conditions in the field in Israel, many of the hybrids tuberized when Atlantic failed to produce any tubers at all. Under more moderate heat stress in Virginia, the complex hybrids exhibited total tuber yield not significantly different from Atlantic, although the tuber set per plant was greater. However, the complex hybrids were more tolerant to heat necrosis and hollow heart than Atlantic. Total glycoalkaloids in field-grown tubers did not exceed the acceptable limit for 13 of 26 selections examined. Kluwer Academic Publishers, 1997 glycoalkaloids nationallicence Solanum berthaultii nationallicence S. chacoense nationallicence S. microdontum nationallicence S. phureja nationallicence unreduced gametes nationallicence Veilleux Richard Department of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, U.S.A aut Paz Margarita Department of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, U.S.A aut Levy David Department of Field and Garden Crops, The Volcani Center, Bet Dagan, Israel aut Euphytica Kluwer Academic Publishers 98/1-2(1997-11-01), 83-92 0014-2336 98:1-2<83 1997 98 10681 https://doi.org/10.1023/A:1003014629029 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003014629029 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Veilleux Richard Department of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, U.S.A aut NATIONALLICENCE 700 1- Paz Margarita Department of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, U.S.A aut NATIONALLICENCE 700 1- Levy David Department of Field and Garden Crops, The Volcani Center, Bet Dagan, Israel aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 98/1-2(1997-11-01), 83-92 0014-2336 98:1-2<83 1997 98 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer