Brassica napus L. based on drought tolerance indices
Author(s):
Abstract:
Drought stress is one of the most important dangers for increasing the yield and good production of crops in Iran and the world. To evaluate the genetic diversity of rapeseed genotypes, identifying the drought resistance indices and drought tolerant genotypes, 16 genotypes were tested in a randomized complete block design (RCBD) with three replications and two different water regimes (Irrigated and rainfed) in experimental field of college of Agriculture, Razi university in 2007-2008. In this research, most of drought tolerance indices such as stress susceptibility index (SSI), tolerance index (TOL), stress tolerance index (STI), yield index (YI), mean productivity (MP), geometric mean productivity (GMP), harmonic mean (HAM) and yield stability index (YSI) based on grain yield were calculated in two different irrigiation regimes. Analysis of variance for grain yield indicated that there was highly significant differenceswere highly significant differences between the genotypes for Yp, Ys, and index GMP, STI, YI and MP. Bi-plot diagram based on two principal componentcomponents indicated that genotypes number 8, 7, 4, and4, and 1 are next to vectors of MP, GMP, STI and HAM and distribution of genotypes in biplot represented the genetic diversity among genotypes for selecting them based on drought tolerance. According to results of drought tolerance indices, Dante, SLM-O46 and Sahara cultivars have higher grain yield and STI index than other genotypes in two regimes and identified as suitable cultivars for production in drought stress condition.
Language:
Persian
Published:
Electronic Journal of Crop Production, Volume:3 Issue: 4, 2011
Page:
107
https://magiran.com/p861525
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!