نتایج جستجو برای: selection and improving cultivars

تعداد نتایج: 16907122  

A.R. Sepaskhah, M.R. Abbasi

A more efficient water use system is needed for agriculture. This is more evidence for rice production with a higher water use for economical production. A large cultivar×water regime interaction exists for grain yield in rice. Therefore, information is required to adopt new rice cultivars with high yield potential under water-saving conditions. The objectives of this study were to analyze the ...

2017
Rafiul Amin Laskar Samiullah Khan

Induced mutagenesis was employed to create genetic variation in the lentil cultivars for yield improvement. The assessments were made on genetic variability, character association, and genetic divergence among the twelve mutagenized populations and one parent population of each of the two lentil cultivars, developed by single and combination treatments with gamma rays and hydrazine hydrates. An...

2002
Yu-Tien Tseng Shih-Ying Hwang

Selective amplification of microsatellite polymorphic loci (SAMPL) markers was used to analyze the genetic relationships between 22 elite cultivars of sweet potato [Ipomoea batatas (L.) Lam.] used in polycross breeding in Taiwan. These elite cultivars included varieties introduced from China and Japan and landraces from Taiwan as well as cultivars derived either from hybrid or polycross breedin...

Journal: :Journal of nematology 2002
R T Robbins E R Shipe L Rakes L E Jackson E E Gbur D G Dombek

Reproduction of reniform nematode Rotylenchulus reniformis on 139 soybean lines was evaluated in a greenhouse in the summer of 2001. Cultivars and lines (119 total) were new in the Arkansas and Mississippi Soybean Testing Programs, and an additional 20 were submitted by C. Overstreet, Louisiana State Extension Nematologist. A second test of 32 breeding lines and 2 cultivars from the Clemson Uni...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم تربیتی و روانشناسی 1391

abstract: research purpose: the purpose of this research is to identify academic databases assessment factors and criteria at law and political science majors. the necessity of this research is to distinguish academic databases assessment factors and criteria and to identify the most important ones and rank them in order to select an appropriate database according to students’ and faculty memb...

2013
V. Tavallali

A research was conducted at Pistachio Research Institute in Rafsanjan, Iran, to evaluate the effects of P. vera L. ‘Badami’, P. vera L. ‘Sarakhs’ and P. mutica F and M. ‘Beneh’ rootstocks on mineral content of leaves and kernels of ‘Owhadi’, ‘Kalleh-ghuchi’ and ‘Ahamd-aghaii’ pistachio scion cultivars. Twenty year old trees of these combinations were used during study over 2003 and 2004. Leaves...

2001
A. G. Hulting

Sulfentrazone has excellent soil activity on many small-seeded broadleaf weeds, however, soybean injury in "eld experiments has been noted under certain environmental conditions. Injury levels in these "eld experiments have appeared to di!er in severity among soybean cultivars. Growth chamber studies were initiated with the objective of examining the suspected di!erences in tolerance among soyb...

Journal: :Journal of nematology 1997
S L Meyer D J Chitwood P Crowley

Nematodes produced in monoxenic culture are used for many research purposes. To maximize the number of Heterodera glycines produced in culture, 24 soybean cultivars (maturity groups 0-8) were evaluated for host suitability. A strain of H. glycines race 3, maintained in monoxenic culture on excised soybean root tips of cv. Kent, was inoculated into 20 petri dishes of each cultivar. The highest n...

2001
Y. Bai R. Qu

Biotechnology approaches can supplement conventional breeding efforts for turfgrass improvement. The objective of this study was to develop reliable transformation and selection schemes for elite turf-type tall fescue cultivars. Transgenic tall fescue (Festuca arundinacea Schreb.) plants were obtained by microprojectile bombardment of embryogenic suspension cells of two elite turf-type cultivar...

2016
Kazuki Matsubara Eiji Yamamoto Nobuya Kobayashi Takuro Ishii Junichi Tanaka Hiroshi Tsunematsu Satoshi Yoshinaga Osamu Matsumura Jun-ichi Yonemaru Ritsuko Mizobuchi Toshio Yamamoto Hiroshi Kato Masahiro Yano

Biomass yield of rice (Oryza sativa L.) is an important breeding target, yet it is not easy to improve because the trait is complex and phenotyping is laborious. Using progeny derived from a cross between two high-yielding Japanese cultivars, we evaluated whether quantitative trait locus (QTL)-based selection can improve biomass yield. As a measure of biomass yield, we used plant weight (aboveg...

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