scholarly journals Post-Irradiation Ageing Effect on Morphological Characters of Crotalaria saltiana

1970 ◽  
Vol 16 ◽  
pp. 89-93 ◽  
Author(s):  
ABS Shah ◽  
MM Ud-Deen ◽  
A Naz ◽  
JK Sarker ◽  
G Kabir
Keyword(s):  
Key Words ◽  
Plant Height ◽  
Gamma Rays ◽  
Morphological Characters ◽  
Germination Percentage ◽  
Ageing Effect ◽  
Free Condition ◽  
Seed Germinability ◽  
Post Irradiation ◽  
Different Doses

Post-irradiation ageing effect on seed germinability and different morphological characters of Crotalaria saltiana were studied in the year of 2006. Germination percentage of Crotalaria saltiana seeds treated with different doses of gamma rays, aged for 32 years in moisture free condition showed remarkable variation. Plants grown from the treated seeds of all the doses showed diversity among themselves regarding their morphological characters. Such as plant height was found to reduce in lower doses and this character showed no such consistent result. Leaf irregularities such as, invaginated margin, inverted margin with blunt apex, leaf with bifurcated apex, small size and dented margin, etc. were recorded. Key words: Post-irradiation ageing effect, Morphological characters, Crotalaria saltiana.   DOI:10.3329/jbs.v16i0.3747 J. bio-sci. 16: 89-93, 2008

Study of the effect of physical mutagens on the elements of cotton varieties Summary

2020 ◽  
Vol 04 (05) ◽  
pp. 40-43
Author(s):  
Ilhama Ibrahim Rzayeva ◽  
Keyword(s):  
Key Words ◽  
Plant Height ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Growing Season ◽  
Vegetation Period ◽  
Low Doses ◽  
High Doses ◽  
Different Doses ◽  
Key Words Cotton

The effect of different doses of gamma rays of the Co60 isotope on the seeds of cotton varieties AzNIXI-104 and AzNIXI-195 before sowing caused changes in the growing season, plant height, sympodial branches and the number of bolls on the bush. At low doses of gamma rays (500 r, 5000 r) the vegetation period was shortened, the number of sympodial branches and bolls in the branch increased, and at high doses of mutagen a decrease in biomorphological features was observed. Key words: cotton, sort, gamma ray, mutagen, sympodial branch, vegetation period.

scholarly journals Radiation Research with Pigeonpeas (Cajanus cajan): Results on X1 and X2 Generations

1969 ◽  
Vol 45 (4) ◽  
pp. 197-204
Author(s):  
R. Abrams ◽  
J. Vélez Fortuño
Keyword(s):  
Puerto Rico ◽  
Seed Germination ◽  
Plant Height ◽  
Gamma Rays ◽  
Cajanus Cajan ◽  
Considerable Increase ◽  
Germ Plasm ◽  
Oak Ridge ◽  
Radiation Research ◽  
Different Doses

Seed of pigeonpea variety Kaki were irradiated at Oak Ridge National Laboratories with different doses of gamma rays and neutrons. The effects of both sources of radiation were studied on seed germination, plant growth, and flowering date during the X1 generation, and plant height and number of days to flower on the X2 generation. The results indicate that both sources of radiation reduced seed germination, and plant height, and induced both earliness and lateness in number of days to flower during the X1 generation. Genetic variability for plant height and early- and late-flowering lines was increased considerably in the X2 generation in the radiated population. With the new source of germ plasm located it appears that pigeonpea varieties can now be selected with more desirable characteristics, thus permitting a considerable increase in production in Puerto Rico.

scholarly journals Post-Irradiation Ageing Effect on Cytological Characters of Crotalaria Saltiana

2013 ◽  
Vol 38 ◽  
pp. 87-95
Author(s):  
ABS Shah ◽  
A Akhter ◽  
A Naz ◽  
MM Ud-Deen ◽  
G Kabir
Keyword(s):  
Mitotic Index ◽  
Gamma Rays ◽  
Pollen Sterility ◽  
Ageing Effect ◽  
Interphase Chromosome ◽  
Unequal Distribution ◽  
Post Irradiation ◽  
Long Time ◽  
Higher Doses

Post-irradiation ageing effect on different cytological characters of Crotalaria saltiana were studied. Mitotic index followed no decreasing or increasing tendency based on the doses of gamma rays. Interphase chromosome volume was not found to increase with an increase of gamma rays. Percentage of pollen sterility was found to be lower in the lower doses and higher in the higher doses. Irregularities such as, formation of fragments, bridges, laggards, single and multiple chromatid bridges, unequal distribution and abnormal nuclear arrangement were recorded. This study reflects that irradiated seeds of Crotalaria saltiana showed no such dose wise effect and that might be due to ageing effect for long time. DOI: http://dx.doi.org/10.3329/rujs.v38i0.16551 Rajshahi University J. of Sci. 38, 87-95 (2010)

Lethal Dose (LD50) Fixation and Sensitivity of Fenugreek (Trigonellafoenum-graecumL.) to Gamma Radiation for Induction of Mutation

2017 ◽  
Vol 4 (04) ◽  
Author(s):  
ANURADHA PATEL ◽  
POONAM VERMA ◽  
SHARDA CHOUDHARY ◽  
ARVIND KUMAR VERMA
Keyword(s):  
Genetic Variability ◽  
Gamma Rays ◽  
Growth Parameters ◽  
Seedling Survival ◽  
Lethal Dose ◽  
Germination Percentage ◽  
Mutation Breeding ◽  
Vigour Index ◽  
Small Flower ◽  
Dose Dependent

Fenugreek (Trigonella foenum-graecumL.) is an annual crop, mainly used as a spiceand leafy vegetable crop in many parts of the world. Classical breeding in fenugreek is restricted due to its low genetic variability and small flower size which hamper manual emasculation and pollination. Mutation breeding is an effective way to enrich genetic variability in crop plants. An experiment was conducted to determine the lethal dose of the physical mutagen gamma rays in fenugreek. The dry seeds of fenugreek were exposed to different doses of gamma rays i.e. 150Gy, 200Gy, 250Gy, 300Gy and 350Gy. These irradiated seeds were sown in the Petri plates with non-irradiated seeds (control). As the dose of gamma rays increased, there was a decrease in germination percentage, seedling survival, root length, shoot length and vigour index. Among five doses of gamma rays, the maximum seed germination was observed at lowest dose 150Gy (93%), followed by 200Gy (83%), 250Gy (76%), 300Gy (76%) and 350Gy (64%). The seedling survival was decreased from 90% (in control) to 56% in 350Gy dose of gamma rays. The gamma rays dose of 150Gy gave stimulatory effect on seedlings growth. The growth parameters were dose dependent, as the dose of gamma rays increased from 200Gy to 350Gy. The gamma rays dose of 350Gy showed 64% seeds germination and 56% of seedlings survival. Therefore, it is concluded that the LD50 dose for fenugreek is close to 350Gy. This information would be highly useful for initiating mutation breeding programme in fenugreek

scholarly journals Alternatives to sowing vegetable type soybeans

1998 ◽  
Vol 41 (4) ◽  
pp. 429-436 ◽  
Author(s):  
Edcarlos Mannfredini ◽  
Deonisio Destro ◽  
Martin Homechin ◽  
Gustavo Sachsida ◽  
Édison Miglioranza
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Germination Percentage ◽  
Flowering Plant ◽  
Food Type ◽  
Individual Plant ◽  
Crop Failure ◽  
Randomized Complete Block Design ◽  
Set Up ◽  
Disposable Plastic

Today, soybean crops of the Tamba Kurodaisu cultivar are sown in beds prior to transplantation to the field. This planting system has caused crop failure due to damage to the root system. An experiment to test different sowing alternatives to obtain plantlets for cropping of food type big seeded soybean was set up with the following treatments: sowing in beds; sowing in 130 cm³ newspaper cups; sowing in test tubes of volumes of 30 cm³, 60 cm³ and 70 cm³; sowing in 70 cm³ disposable plastic cups; sowing on 90 cm³ styrofoam trays. A randomized complete block design was used, and the following traits were assessed: germination percentage; number of days to flowering; plant height at flowering; number of days to maturity; plant height at maturity; number of seeds per plant; individual plant yield; weight of a hundred seeds. Results should that three methods could be used to set up Tamba Kurodaisu cultivar crops: sowing in disposable plastic cups, sowing in beds with later transplant, or direct sowing in the field.

Toxicity and immunogenicity of Crotalus durissus terrificus venom treated with different doses of gamma rays

Toxicon ◽  
1999 ◽  
Vol 37 (8) ◽  
pp. 1131-1141 ◽  
Author(s):  
Patricia Bianca Clissa ◽  
Nanci do Nascimento ◽  
José Roberto Rogero
Keyword(s):  
Gamma Rays ◽  
Crotalus Durissus Terrificus ◽  
Crotalus Durissus ◽  
Different Doses

scholarly journals Adaçayı ve Dağ Çayında Tuz Stresi Üzerine Selenyum Uygulamalarının Etkileri

2019 ◽  
Vol 7 (sp2) ◽  
pp. 29
Author(s):  
Mahmut Çamlıca ◽  
Gülsüm Yaldız ◽  
Ferit Özen ◽  
Abdurrahman Başol ◽  
Halit Aşkın
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Root Weight ◽  
Fresh Leaf ◽  
Leaf Weight ◽  
Number Of Leaves ◽  
Shoot Weight ◽  
Different Doses ◽  
Number Of Branches ◽  
Fresh Root

Sage and mountain sage belong to Lamiaceae family which have commercial importance from medicinal and aromatic plants in Turkey. The aim of this study was to evaluate the effects of different doses of selenium in salinity conditions on the morphological characteristics of sage (Salvia officinalis L.) and mountain tea (Sideritis sp.). Four different doses of selenium (5, 10, 20, 40 mg/l) were applied in without salinity (0) and salinity (250 mM NaCl/l) medium. The experiment was carried out in the split plot design with three replications in the climate chamber room of the department of field crops. When the examined properties were evaluated; plant height changed between 15.56-23.85 cm, number of branches 10.50-12.78 number/plant, number of leaves 52.78-92.00 number/plant, fresh leaf weight 2.48-7.51 g/plant, dry leaf weight 0.48-3.32 g/plant, fresh root weight 1.52-7.16 g/plant, dry root weight 0.19-1.24 g/plant, root length 26.18-36.07 cm, fresh shoot weight of 1.13-7.15 g/plant and dry shoot weight 0.13-0.38 g/plant. In mountain tea, the properties were determined for plant height as 3.26-5.93 cm, for number of branches as 2.50-6.33 number/plant, for number of leaves as 28.22-91.14 number/plant, for fresh and dry leaf weights as 2.42-11,03 and 0.45-1.91 g/plant, for fresh and dry root weights as 0.71-3.97 and 0.18-0.74 g/plant, for root length as 14.78-33.26 cm, for fresh and dry shoot weights as 0.29-2.28 and 0.12-0.41 g/plant were determined. As a result of this study, 5 mg/l selenium application in salinity conditions in both plants has reached high values in terms of fresh leaf weights. In addition to this, it was found that selenium applications in salinity conditions had positive effects on dry leaf weight in sage and fresh root and fresh shoot weights in mountain tea. As a result of correlation analysis, positive correlations were found between dry leaf weight and other characteristics especially in mountain tea in terms of traits examined in both plants.

scholarly journals Genetic Variability Studies in M5 Generations of Determinate Early Maturing Cluster Bean [Cyamopsis tetragonoloba (L.) Taub] (MDU-1) Mutants for Yield and Yield Attributing Characters

2022 ◽  
Author(s):  
Devi Suresh ◽  
M. Ananthan ◽  
C. Vanniarajan ◽  
P. Balasubramanian ◽  
T. Sivakumar ◽  
...  
Keyword(s):  
Gamma Rays ◽  
High Yield ◽  
Cyamopsis Tetragonoloba ◽  
Variability Analysis ◽  
Cluster Bean ◽  
Bean Variety ◽  
Early Maturing ◽  
Per Se ◽  
Mutant Lines ◽  
Different Doses

Background: MDU-1 is a high yielding, indeterminate cluster bean variety. In order to develop determinate mutant with high yield, MDU-1 cluster bean variety was irradiated using gamma rays, electron beam and combination of gamma rays and EMS with different doses and the variability induced in M5 generations were studied. Methods: Twenty one best individual plants from M4 generation were selected based on plant height and higher yield and forwarded to M5 generation where they were evaluated in RBD with three replications. Fourteen non-segregating mutant lines with desirable traits were identified in M5 generation and were evaluated for variability along with the parent MDU1. Result: Five best mutant lines namely ACMC-020-04, ACMC-020-11, ACMC-020-08, ACMC-020-10 and ACMC-020-11 were selected from the 14 accessions based on per se performance and variability analysis. The selected mutants needs to be forwarded for stability testing in different environments.

scholarly journals Combate integrado de la pudrición radical de la papaya (Phytophthora sp.) a nivel de vivero.

2016 ◽  
Vol 9 (1) ◽  
pp. 72 ◽  
Author(s):  
Lenín Ramírez ◽  
Alfredo Durán ◽  
Dennis Mora
Keyword(s):  
Costa Rica ◽  
Plant Height ◽  
Organic Fertilizer ◽  
Germination Percentage ◽  
Soil Microorganism ◽  
Control Treatment ◽  
Fresh Weight ◽  
Pathogenic Agent ◽  
Bacteria And Fungi ◽  
The University

The effect of several strategies - alone and integrated - on the control of the Phytophthora sp. fungae, which causes radical rotting of papaya fruits, was evaluated under nursery conditions. The experiment took place between August 1994 and March 1995 at the University of Costa Rica's Estación Experimental Fabio Baudrit, located in Alajuela, Costa Rica. The treatments applied were: sun heat for 30 days; organic fertilizer made from hen droppings; etridiazole fungicide; and the following combinations: sun heat + etridiazole + organic fertilizer; etridiazole + organic fertilizer; sun heat + etridiazole; sun heat + etridiazole + organic fertilizer, and finally, an inoculated control treatment. Soil rows were made, and then they were innoculated with the pathogenic agent, and finally the aforementioned treatments were applied. The treated soils were bagged separately. The Solo Sunrise Hawaiian variety was planted in bags. The percentage of gerrnination, stem diameter at soillevel, plant height, radical system fresh weight, and severity of radical rotting were evaluated three months later. In addition, the effect of the treatments on beneficent soil microorganism populations (actinomyces, protozoa, bacteria, and fungi) was evaluated, as well as those of pathogenic populations. Organic fertilizer increased plant strength. All treatments affected germination; the innoculated control had the greatest germination percentage. Treatments containing organic fertilizer affected germination most.

scholarly journals VARIABILITAS GENETIK DAN HERITABILITAS KARAKTER MORFOLOGIS BEBERAPA GENOTIPE KENTANG

EUGENIA ◽  
2013 ◽  
Vol 19 (2) ◽  
Author(s):  
Ventje Pangemanan ◽  
D. S. Runtunuwu ◽  
J. Pongoh
Keyword(s):  
Genetic Variability ◽  
Leaf Area ◽  
Plant Height ◽  
Narrow Range ◽  
Morphological Characters ◽  
Wide Sense ◽  
Number Of Leaves

ABSTRACT This study aimed to determine the genetic variability and heritability of morphological characters of some genotypes of potato at the Seed Station in Linelean Village, Modoinding of South Minahasa Regency. The results showed that, the relatively narrow range of genotypes variance for all the characters observed. The coefficient of variance genotypes for plant height, at 14, 42 and 56 DAP (Days After Planting) was relatively narrow, whereas at 7, 21, 28, 35 and 42 DAP relatively wide. For the character of the number of leaves at 7 and 14 DAP are wide and at 21, 28, 35, 42 and 49 DAP relatively narrow. For the character of leaf area at 7 and 14 DAP were wide and at 21, 28, 35, 42 and 49 DAP relatively narrow. For the character of the number of harvest tubers per plant and weight per tuber harvest were wide. Wide sense heritability were high for all the characters observed, except for plant height at 7 and 56 DAP were classified as moderate. Keywords: genotype variance, coefficient variance of genotype and heritability ABSTRAK Penelitian ini bertujuan untuk mengetahui variabilitas genetik dan heritabilitas karakter   morfologis beberapa genotipe kentang di Balai Benih Desa Linelean Modoinding Kabupaten Minahasa Selatan. Hasil penelitian menunjukkan bahwa ragam genotipe tergolong sempit untuk semua karakter yang diamati. Koefisien ragam genotipe untuk karakter tinggi tanaman, pada 14, 42 dan 56 HST (Hari Setelah Tanam)  tergolong sempit, sedangkan pada 7, 21, 28, 35 dan 42 HST tergolong luas. Untuk karakter jumlah daun pada 7 dan 14 HST tergolong luas dan pada 21, 28, 35, 42 dan 49 HST tergolong sempit. Untuk karakter luas daun pada 7 dan 14 HST tergolong luas dan pada 21, 28, 35, 42 dan 49 HST tergolong sempit. Untuk karakter jumlah umbi panen per tanaman dan berat per umbi panen tergolong luas. Heritabilitas arti luas semua karakter tergolong tinggi, kecuali untuk karakter tinggi tanaman pada 7 dan 56 HST yang tergolong sedang. Eugenia Volume 19  No. 2  Agustus 2013 Kata kunci: ragam genotipe, koefisien ragam genotipe dan heritabilitas

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