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Titolo:
MUTATION BREEDING OF HIGHGATE (MUSA-ACUMINATA, AAA) FOR TOLERANCE TO FUSARIUM-OXYSPORUM F SP. CUBENSE USING GAMMA-IRRADIATION
Autore:
BHAGWAT B; DUNCAN EJ;
Indirizzi:
AGR & AGRI FOOD CANADA,AGRIFOOD RES CTR SUMMERLAND BC V0H 1Z0 CANADA UNIV W INDIES,DEPT PLANT SCI ST AUGUSTINE TRINID & TOBAGO
Titolo Testata:
Euphytica
fascicolo: 2, volume: 101, anno: 1998,
pagine: 143 - 150
SICI:
0014-2336(1998)101:2<143:MBOH(A>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANTAIN MUSA; BANANA MUSA; SOMATIC EMBRYOGENESIS; SHOOT-TIPS; TRANSFORMATION; REGENERATION; PROTOPLASTS; VARIANTS;
Keywords:
BANANA; BREEDING; FUSARIUM; GAMMA IRRADIATION; MUSA; MUTATION; IN VITRO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
B. Bhagwat e E.J. Duncan, "MUTATION BREEDING OF HIGHGATE (MUSA-ACUMINATA, AAA) FOR TOLERANCE TO FUSARIUM-OXYSPORUM F SP. CUBENSE USING GAMMA-IRRADIATION", Euphytica, 101(2), 1998, pp. 143-150

Abstract

Explants of in vitro-grown cultures of banana (Musa spp., AAA Group cv. Highgate) were exposed to various doses of gamma radiation to evaluate the effectiveness of inducing mutations and also with the aim of producing variants tolerant to the fungus Fusarium oxysporum f. sp. cubense. This fungus causes fusarial wilt or Panama Disease in banana andplantain. Based on phenotypic variations in regenerated plants, factors of effectiveness were calculated for each type of explant. Factors of effectiveness for Types I and III explants (recently dissected apices and corms respectively) showed a similar trend and were higher thanthat from Type II explants (apices cultured in liquid medium for 28 days). The highest factors of effectiveness were obtained at doses of 0.8 and 2.0 krad for explant Types I and III respectively. Regenerated plants were screened for tolerance to the fungus under greenhouse conditions. Twelve weeks after inoculation, 9 (0.9%), 3 (0.3%) and 8 (0.5%) plants regenerated from explant Types I, II and III respectively hadless than 10% vascular invasion of their corms with no external symptoms of the disease. These plants were considered tolerant to the fungus and were multiplied, ex vitro, for field screening.

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Documento generato il 19/01/20 alle ore 06:02:42