نتایج جستجو برای: yield stability index ysi

تعداد نتایج: 866255  

2009
Christian G. Böhmer Tiberiu Harko

We analyze the stability of Newtonian polytropic static fluid spheres, described by the Lane-Emden equation. In the general case of arbitrary polytropic indices the Lane-Emden equation is a non-linear second order ordinary differential equation. By introducing a set of new variables, the Lane-Emden equation can be reduced to an autonomous system of two ordinary differential equations, which in ...

عبدالشاهی, روح اله, مختاری فر, خدیجه , پورسیدی, شهرام ,

Genotype by environment interaction creates intricacy in yield prediction and is a challenge in agronomy and plant breeding. In order to assess yield stability of eight bread wheat genotypes in eight environments (four years under normal and drought stress conditions), eight randomized complete block design with three replications were conducted out in Kerman. Results analyzed as a combined des...

جعفری‌راد, سمر, خالدیان, محمدرضا, رضایی, مجتبی, زواره, محسن,

To study the responses of seven rice genotypes (Khazar, SA13, Deylam, Sange Joe, Sepidrud, 831 and T5) to different levels of irrigation water salinity, and determining grain yield based on tolerance indices, a CRD based factorial pot experiment with five levels of irrigation water salinity (1, 2, 4, 6 and 8 dSm-1) and three replications was carried out at Rice Research Institute of Iran in 201...

ژورنال: علوم آب و خاک 2006
حمید دهقانی, , رحمت‌الله کریمی‌زاده, , زیبنده دهقانپور, ,

To facilitate the interpretation of data from a genotype by environment experiment (GE), a cluster method is proposed to group genotypics according to their response to the environments especially when the GE interaction is large. The interaction structure of two-way classification data often can be identified if the data stratified into homogeneous subsets. In this paper four GE interaction cl...

ژورنال: علوم زراعی ایران 2019
Ghandi, Akbar, Moayedi, Ali Akbar, Najafi Mirak, Tohid, Sasani, Shahriar,

Identification of adapted genotypes with high grain yield is the most important goal in durum wheat breeding programs. To study adaptation and grain yield stability of durum wheat genotypes, 18 durum wheat promising lines with two commercial durum and bread wheat cultivars were used. The durum wheat genotypes were evaluated in four locations; Isfahan, Karaj, Kermanshah and Neishabour in tempera...

حمید دهقانی, , احمد یوسفی, , مجید شاه‌محمدی, ,

To determine yield stability and to evaluate genotype interaction with environment interaction, 18 genotype of barley (Hordeum vulgare L.) and a control group were evaluated in a randomized complete block design with 4 replications in 3 successive years (1997-2000) at 10 research stations. Simple and combined analysis of variance revealed significant genetic differences between yield genotypes ...

شریفی, پیمان , محمدی, محتشم , کریمی‌زاده, رحمت‌الله ,

The selection efficiency of the most desirable safflower genotypes can be improved by incorporating the graphical methods and statistical analysis. This experiment was carried out to determine grain yield stability of safflower genotypes using the graphical and statistical methods. Twenty safflower genotypes were evaluated in Chachsaran, Choram, Behbehan and Dehdasht using randomized complete b...

2014

It is well known that max-weight policies based on a queue backlog index can be used to stabilize stochastic networks, and that similar stability results hold if a delay index is used. Using Lyapunov optimization, we extend this analysis to design a utility maximizing algorithm that uses explicit delay information from the head-of-line packet at each user. The resulting policy is shown to ensur...

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