บทคัดย่องานวิจัย

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Blackheart resistance in three clones of pineapple [Ananas comosus (L.) Merr.] in subtropical Queensland.

Sanewski, G. M.; Giles, J.;

Australian Journal of Experimental Agriculture Year: 1997 Vol: 37 Issue: 4 Pages: 459-461 Ref: 18 ref.

1997

บทคัดย่อ

Blackheart resistance in three clones of pineapple [Ananas comosus (L.) Merr.] in subtropical Queensland.

Smooth Cayenne Queensland clone 13, and intergroup hybrids 53-116 and 73-50 were harvested in mid July 1994 and evaluated for blackheart resistance in Queensland, Australia. Relative to C13, hybrids 73-50 and 53-116 had some level of field resistance to blackheart but only 53-116 was without blackheart after storage at 10 deg C for 14 days followed by 20 deg for 8 days. Hybrid 53-116 had a high vitamin C (ascorbic acid) content compared with clone 13. However, 73-50 had the highest level of vitamin C but still developed blackheart, although the symptoms were not as severe as C13. It is suggested that factors other than vitamin C may play a role in blackheart resistance. The level of field resistance to blackheart shown by 73-50 may be sufficient for winter production in some sites in south-east Queensland. Field testing is needed to determine the value of this resistance.