Apple orchard survey

Mode of access: Internet.

Apple orchard survey

Mode of access: Internet.

Apple orchard survey

Mode of access: Internet.

Apple production in

Mode of access: Internet.

Apple orchard survey

Mode of access: Internet.

Hood river apple orc

Mode of access: Internet.

A taste of the big apple--housing in New York City.

Mode of access: Internet.

The apple annual; a report of the proceedings of the Fruit Products Congress ... held in connection with the ... National Apple Show.

Mode of access: Internet.

Sequence diversity in the coat protein coding region of the genome RNA of Johnsongrass mosaic virus in Australia

Sequence diversity in the coat protein coding region of Australian strains of Johnsongrass mosaic virus (JGMV) was investigated. Field isolates were sampled during a seven year period from Johnsongrass, sorghum and corn across the northern grain growing region. The 23 isolates were found to have greater than 94% nucleotide and amino acid sequence identity. The Australian isolates and two strains from the U.S.A. had about 90% nucleotide sequence identity and were between 19 and 30% different in the N-terminus of the coat protein. Two amino acid residues were found in the core region of the coat protein in isolates obtained from sorghum having the Krish gene for JGMV resistance that differed from those found in isolates from other hosts which did not have this single dominant resistance gene. These amino acid changes may have been responsible for overcoming the resistance conferred by the Krish gene for JGMV resistance in sorghum. The identification of these variable regions was essential for the development of durable pathogen-derived resistance to JGMV in sorghum.