You cannot see this page without javascript.


This is the VOA Special English Agriculture Report, from http://voaspecialenglish.com | http://facebook.com/voalearningenglish

Scientists have made a genetic map of the tomato. Tomatoes are second only to potatoes as the world's most valuable vegetable crop. Eight years of work went into making the map, or genome. Three hundred scientists around the world took part in the project to sequence the tomato's DNA code. Giovanni Giuliano, a researcher in Italy, is part of the Tomato Genome Consortium. He says they started as ten countries and now have fourteen. Having the tomato's genetic map will help growers who are always trying to produce a better tomato. Mr. Giuliano says they now know not only what genes are there, but their order. Researchers published the genome of a tomato used by Heinz, the American food company famous for its tomato ketchup. Ketchup is a thick sauce used on hamburgers, hot dogs and other foods. Heinz's research manager, Rich Ozminkowski, says the company knows what it wants in a tomato. "Traits like sugars and, for Heinz, viscosity, or the juice thickness, and the redness of the tomatoes are all very critical traits for us," he says. Those are all controlled by a lot of different genes within the tomato. Mr. Ozminkowski says genome sequencing takes away much of the guesswork for breeders of tomatoes or other crops that have been mapped. In his words, "By having the genome information, we can pick out those tomato plants that have more of those genes." Until the late nineteen sixties, the tomatoes that Heinz used to make ketchup often cracked open on the vine after a heavy rain. Heinz wanted to to develop a variety that would resist that cracking. Breeders used the traditional methods of mating generations of different varieties. The tomatoes they were trying to develop not only had to resist cracking. They also had to resist disease. And they had to be easy to harvest mechanically. Finally the company came up with the tomato it wanted, called the Heinz 1706. Mr. Ozminkowski says the job would have been much easier if there had been a genetic map to follow. There were no genetic tools at the time. But the work today is not just about making better ketchup. Climate change may force many crops to adjust to new conditions. And Mr. Ozminkowski says researchers are already using the new genetic tools to help fight new plant diseases. The researchers published the tomato genome in the journal Nature. For VOA Special English, I'm Carolyn Presutti. For more news and information for people learning English, go to voaspecialenglish.com.(Adapted from a radio program broadcast 05Jun2012)

0 (1).jpg

원문출처 : http://www.youtube.com/watch?v=q2BHuqtlI-A&feature=youtube_gdata

List of Articles
번호 제목 글쓴이 날짜 조회 수
» VOA News Tomato's Genetic Secrets Are Peeled Away file chanyi 2012-07-03 654
324 VOA News Golden Gate Bridge Still Shines file chanyi 2012-07-03 1026
323 굿모닝팝스 2012/07/02 (월) 이근철의 굿모닝팝스 chanyi 2012-07-02 540
322 굿모닝팝스 2012/07/01 (일) 이근철의 굿모닝팝스 chanyi 2012-07-01 518
321 굿모닝팝스 2012/06/30 (토) 이근철의 굿모닝팝스 chanyi 2012-06-30 452
320 굿모닝팝스 2012/06/29 (금) 이근철의 굿모닝팝스 chanyi 2012-06-29 624
319 굿모닝팝스 2012/06/27 (수) 이근철의 굿모닝팝스 chanyi 2012-06-27 530
318 VOA News Pets Bring Smiles (and Wags) to Retirement Home file chanyi 2012-06-27 694
317 VOA News What Is the Relationship Between Age and Happiness? file chanyi 2012-06-26 596
316 VOA News New Rules on US Summer Jobs for Foreign Students file chanyi 2012-06-26 693
315 VOA News Meeting Highlights Economic 'Dynamism' of Southeast Asia chanyi 2012-06-26 982
314 VOA News Growing a Farm With Crowd-Sourced Money file chanyi 2012-06-26 671
313 VOA News SpaceX and Its Mission chanyi 2012-06-26 602
312 굿모닝팝스 2012/06/26 (화) 이근철의 굿모닝팝스 chanyi 2012-06-26 462
311 VOA News The Historic Flight of the Dragon file chanyi 2012-06-25 536
310 굿모닝팝스 2012/06/25 (월) 이근철의 굿모닝팝스 chanyi 2012-06-25 415
309 굿모닝팝스 2012/06/24 (일) 이근철의 굿모닝팝스 chanyi 2012-06-24 466
308 굿모닝팝스 2012/06/23 (토) 이근철의 굿모닝팝스 chanyi 2012-06-23 363
307 굿모닝팝스 2012/06/22 (금) 이근철의 굿모닝팝스 chanyi 2012-06-22 373
306 굿모닝팝스 2012/06/21 (목) 이근철의 굿모닝팝스 chanyi 2012-06-21 457
본 사이트에서는 회원분들의 게시된 이메일 주소가 무단으로 수집되는 것을 거부합니다. 게시된 정보 및 게시물의 저작권과 기타 법적 책임은 자료제공자에게 있습니다. 이메일:chanyi@hanmail.net Copyright © 2001 - 2022 EnjoyEnglish.co.kr. All Right Reserved.
커뮤니티학생의방교사의 방일반영어진로와 진학영어회화