scholarly journals GENOTYPIC VARIATION OF SOME EGYPTIAN AND UPLAND RICE GENOTYPES IN SOME PHYSIO-MORPHOLOGICAL TRAITS AND MICROSATELLITE DNA UNDER DROUGHT CONDITION.

2010 ◽  
Vol 1 (3) ◽  
pp. 141-155
Author(s):  
S. Sedeek ◽  
T. Metwally ◽  
Kazutoshi Okuno ◽  
A. Abdelkhalik
Keyword(s):  
Microsatellite Dna ◽  
Morphological Traits ◽  
Upland Rice ◽  
Genotypic Variation ◽  
Drought Condition ◽  
Rice Genotypes

scholarly journals Genetic Divergence and Heritability of 42 Coloured Upland Rice Genotypes (Oryzasativa) as Revealed by Microsatellites Marker and Agro-Morphological Traits

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0138246 ◽  
Author(s):  
Faiz Ahmad ◽  
Mohamed Musa Hanafi ◽  
Md Abdul Hakim ◽  
Mohd Y. Rafii ◽  
Ibrahim Wasiu Arolu ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Morphological Traits ◽  
Upland Rice ◽  
Rice Genotypes ◽  
Microsatellites Marker

scholarly journals Performance of F2 Rice (Oryza sativa L.) Segregants Derived from a Cross the BPT-5204 / IR-64Drt1

2020 ◽  
pp. 31-47
Author(s):  
Anjani Kumar ◽  
D. N. Singh ◽  
Krishna Prasad ◽  
Avinash Pandey
Keyword(s):  
Grain Yield ◽  
Field Condition ◽  
Significant Variation ◽  
Oryza Sativa L ◽  
Block Design ◽  
Drought Condition ◽  
Normal Field ◽  
Randomized Block Design ◽  
Rice Genotypes ◽  
Selection Of

The present investigation was carried out with F2 plants from a cross between two parents i.e., BPT-5204 and IR-64Drt1. The selection of parents for crosses was made based on genotypes that were tolerant and susceptible to drought condition. BPT-5204 was drought susceptible and IR-64Drt1 was also tolerant to drought. In this experiment adequate amount of variability was detected for grain yield per plant and its components among 324 segregants evaluated under augmented randomized block design II in normal field condition. The analysis of variance for grain yield and its attributing characters among blocks, treatments, entries, checks and checks vs entries revealed presence of significant variation in the segregants studied. However, with respect to checks, non-significant differences were recorded for only L/B ratio. The results indicated that among 324 rice genotypes including checks, only 9 rice genotypes expressed higher yield compared to seven checks varieties under normal field condition. The segregants S-51, S-122, S-135, S-195, S-199, S-210, S-219, S-222, S-251 were top ranking genotypes with respect to all checks.

Storage behaviour of two contrasting upland rice genotypes

2009 ◽  
Vol 41 (1) ◽  
Author(s):  
RK Bam ◽  
TD Hong ◽  
RH Ellis ◽  
FK Kumaga ◽  
EA Asiedu
Keyword(s):  
Upland Rice ◽  
Rice Genotypes

scholarly journals Physiological parameters to select upland rice genotypes for tolerance to water deficit

2015 ◽  
Vol 50 (7) ◽  
pp. 534-540 ◽  
Author(s):  
Cleber Morais Guimarães ◽  
Luís Fernando Stone ◽  
Adriano Pereira de Castro ◽  
Odilon Peixoto de Morais Júnior
Keyword(s):  
Water Stress ◽  
Water Deficit ◽  
Upland Rice ◽  
Water Status ◽  
Leaf Temperature ◽  
Physiological Parameters ◽  
Stress Conditions ◽  
Diffusive Resistance ◽  
Susceptible Control ◽  
Rice Genotypes

Abstract: The objective of this work was to evaluate the feasibility of using physiological parameters for water deficit tolerance, as an auxiliary method for selection of upland rice genotypes. Two experiments - with or without water deficit - were carried out in Porangatu, in the state of Goiás, Brazil; the water deficit experiment received about half of irrigation that was applied to the well-watered experiment. Four genotypes with different tolerance levels to water stress were evaluated. The UPLRI 7, B6144F-MR-6-0-0, and IR80312-6-B-3-2-B genotypes, under water stress conditions, during the day, showed lower stomatal diffusive resistance, higher leaf water potential, and lower leaf temperature than the control. These genotypes showed the highest grain yields under water stress conditions, which were 534, 601, and 636 kg ha-1, respectively, and did not differ significantly among them. They also showed lower drought susceptibility index than the other genotypes. 'BRS Soberana' (susceptible control) was totally unproductive under drought conditions. Leaf temperature is a easy-read parameter correlated to plant-water status, viable for selecting rice genotypes for water deficit tolerance.

Genotypic Variation for Morphological Traits in a White Clover Mapping Population Evaluated Across Two Environments and Three Years

Crop Science ◽  
2013 ◽  
Vol 53 (2) ◽  
pp. 460-472 ◽  
Author(s):  
M. Z. Z. Jahufer ◽  
A. Dunn ◽  
I. Baird ◽  
J. L. Ford ◽  
A. G. Griffiths ◽  
...  
Keyword(s):  
White Clover ◽  
Morphological Traits ◽  
Mapping Population ◽  
Genotypic Variation

Pathogenicity of the root-lesion nematode, Pratylenchus zeae, on rice genotypes under different hydro-ecologies in Tanzania

Nematology ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 221-233 ◽  
Author(s):  
Yasinta Beda Nzogela ◽  
Sofie Landschoot ◽  
Ashura-Luzi Kihupi ◽  
Danny L. Coyne ◽  
Godelieve Gheysen
Keyword(s):  
Upland Rice ◽  
Growth And Yield ◽  
Post Inoculation ◽  
Root Lesion Nematode ◽  
Rice Genotypes ◽  
Lesion Nematode ◽  
The Impact ◽  
Mixed Stage ◽  
Pratylenchus Zeae ◽  
Better Than

Summary The root-lesion nematode, Pratylenchus zeae, is commonly found in upland rice fields. To measure the impact of the nematode on rice production, a screenhouse experiment was conducted using two farmer-adapted Oryza sativa cultivars, ‘Supa’ (‘SurinamV-880’) and ‘SARO-5’ (‘TXD 306’), under flooded, upland and drought water regimes imposed at 7 days post-inoculation of mixed-stage nematodes (200, 500, 1000, 3000 and 10 000 plant−1). Growth and yield parameters were recorded, and the experiment was terminated after 5 months. ‘Supa’ was shown to be resistant to P. zeae, while ‘SARO-5’ was susceptible. Pratylenchus zeae reduced the growth and yield of both cultivars, though more for ‘SARO-5’ than for ‘Supa’. Yield decreased with increasing final nematode densities. Pratylenchus zeae reproduction was highest at 200 and 500 inoculum levels and under upland water conditions. The yield of ‘SARO-5’ was greater than that of ‘Supa’ under flooded conditions and with no or 200 and 500 nematode inoculum levels, but with high P. zeae inoculum ‘Supa’ yield was better than ‘SARO-5’.

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