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Titolo:
Heritability of thrips resistance in the 'IPA-3' onion cultivar in South Texas
Autore:
Hamilton, BK; Pike, LM; Sparks, AN; Bender, DA; Jones, RW; Candeia, J; de Franca, G;
Indirizzi:
Texas A&M Univ, Dept Hort Sci, Vegetable Improvement Ctr, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 nt Ctr, College Stn, TX 77843 USA Texas Agr Extens Serv, Weslaco, TX 78596 USA Texas Agr Extens Serv Weslaco TX USA 78596 ns Serv, Weslaco, TX 78596 USA Texas Agr Expt Stn, Lubbock, TX 79401 USA Texas Agr Expt Stn Lubbock TX USA 79401 r Expt Stn, Lubbock, TX 79401 USA Seminis Vegetable Seeds, College Stn, TX 77845 USA Seminis Vegetable Seeds College Stn TX USA 77845 ollege Stn, TX 77845 USA Empresa Pernambucana Pesquisa Agropecuaria, BR-50761 Recife, PE, Brazil Empresa Pernambucana Pesquisa Agropecuaria Recife PE Brazil BR-50761 azil
Titolo Testata:
EUPHYTICA
fascicolo: 2, volume: 109, anno: 1999,
pagine: 117 - 122
SICI:
0014-2336(1999)109:2<117:HOTRIT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
TABACI THYSANOPTERA;
Keywords:
Allium cepa; Frankliniella occidentalis (Pergande); host plant resistance; onion thrips; Thrips tabaci Lindeman; western flower thrips;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Hamilton, BK Texas A&M Univ, Dept Hort Sci, Vegetable Improvement Ctr, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 ge Stn, TX 77843 USA
Citazione:
B.K. Hamilton et al., "Heritability of thrips resistance in the 'IPA-3' onion cultivar in South Texas", EUPHYTICA, 109(2), 1999, pp. 117-122

Abstract

A two season study was conducted to compare the onion cultivars TG1015Y and IPA-3 for resistance to thrips in South Texas. Narrow and broad sense heritabilities were estimated from populations developed from the cross, 'IPA-3' x 'TG1015Y'. Parents, F1, F2, and the respective backcross populations were evaluated for thrips numbers at the Texas Agricultural Experiment Station, Weslaco, TX. 'IPA-3' had significantly fewer thrips than 'TG1015Y' in both seasons. Yield was significantly different only in the 1996-97 season. The heritability of thrips resistance in this study was very low. Dependingon the methods of estimation h(2) was 5.3% and 4.0%, and H-2 was 4.1% and 8.0%. These results suggest that greater genetic gains for thrips resistance in onion can be achieved by selection on a family basis rather than usingsingle plant selection.

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Documento generato il 25/11/20 alle ore 14:52:27