One approach to improve a plants defense against a

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: lity and heterozygosity. In other words, apples, as well as many other plants, do not breed true to variety. Even though they are disease resistant, progeny trees and plants often lack the table quality of the parents and are not accepted by consumers. Recent advances in genetic engineering offer alternative ways to transfer a resistance gene into popular commercial varieties without changing other favorable traits. One approach to improve a plants' defense against a particular pathogen that has been made possible by genetic engineering is to use genes found in genetic fungi, insects, and animals. Transgenic ‘Royal Gala’ apple line (left) expressing antibacterial proteins has significantly enhanced resistance to fire blight compared to the non­transgenic (right). Scab infected apple leaves (A) and fruit (B). Scab lesions on a leaf of a transgenic ‘McIntosh’ line T564 compared to those on susceptible noncompared transgenic ‘McIntosh’ leaf. transgenic Apples ripen six to Apples ripen six to ten times faster at room temperature than if they are refrigerated. Apple Varieties Consumers Prefer to Purchase to The most popular apple varieties are Cortland, Red Delicious, Golden Delicious, Empire, Fuji, Gala, Ida Red, Macoun, McIntosh, Northern Spy, and Winesap. Evaluating apples treated with 1-MCP in a controlled atmosphere chamber for quality after extended periods in storage. after Controlled atmosphere (CA) storage requires air-tight, storage refrigerated warehouse rooms that are sealed after the apples are placed inside. The oxygen content in the storeroom air is reduced from 21% to 2.5%, and the carbon dioxide level is increased from 0.25% to 2-5%, and high humidity is maintained....
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online