The USDA-ARS National Plant Germplasm System (NPGS) maintains more than 200 Allium sativum (garlic) accessions at the Western Regional Plant Introduction Station in Pullman, WA. All accessions must be grown out in the field annually since garlic plants from these accessions do not reliably produce seeds and bulbs do not store well. Shoot tips excised from garlic cloves can be successfully cryopreserved using either Plant Vitrification Solution 2 (PVS2; 15 percent v/v DMSO, 15 percent v/v ethylene glycol, 30 percent v/w glycerol, 0.4 M sucrose) or Plant Vitrification Solution 3 (PVS3; 50 percent v/w sucrose, 50 percent v/w glycerol). We compared regrowth of shoot tips representing diverse garlic germplasm after exposure to either PVS2 or PVS3 during the cryopreservation procedure. At the USDA-ARS National Center for Genetic Resources Preservation, a component of the NPGS, we consider accessions successfully preserved if a minimum of 40 percent of explants exhibit regrowth after liquid nitrogen exposure and at least 60 viable shoot tips remain in long-term storage. Ten of twelve diverse garlic accessions were successfully cryopreserved using either PVS2 or PVS3 as cryoprotectants. Five genotypes had the best post liquid nitrogen regrowth after exposure to PVS2, four genotypes had the best regrowth after exposure to PVS3, and three genotypes performed equally well using either cryoprotectant solution. This project is part of an ongoing program to cryopreserve accessions of NPGS clonal crop collections.

译文

usda-ars国家植物种质系统 (NPGS) 在华盛顿州普尔曼市的西部地区植物引种站保留了200多种葱属 (大蒜)。所有种质必须每年在田间种植,因为这些种质的大蒜植物不能可靠地产生种子,并且鳞茎不能很好地储存。可以使用植物玻璃化溶液2 (PVS2; 15% v/v DMSO,15% v/v乙二醇,30% v/w甘油,0.4 M蔗糖) 或植物玻璃化溶液3 (PVS3; 50% v/w蔗糖,50% v/w甘油)。我们比较了在冷冻保存过程中暴露于PVS2或PVS3后代表不同大蒜种质的茎尖的再生长。在npg的组成部分usda-ars国家遗传资源保存中心,如果至少40% 的外植体在液氮暴露后表现出再生,并且至少有60个可行的茎尖在长期储存中,我们认为种质成功保存。使用PVS2或PVS3作为冷冻保护剂成功冷冻保存了十二种不同大蒜中的十种。暴露于PVS2后,五种基因型的液氮再生长最佳,四种基因型的暴露于PVS3后再生长最佳,使用任一冷冻保护剂溶液,三种基因型的表现均相同。该项目是正在进行的一项计划的一部分,该计划旨在冷冻保存NPGS克隆作物集合的加入。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录