scholarly journals Analiza diferitor hibrizi de perspectivă în sectoarele comparative

2021 ◽  
Author(s):  
Rodica Martea ◽  
◽  
Ion Gisca ◽  
Aliona Cucereavii ◽  
◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Plant Height ◽  
Seed Weight ◽  
International Markets ◽  
Climatic Conditions ◽  
Seed Number ◽  
Breeding Programs ◽  
Biometric Parameters ◽  
Global Agriculture ◽  
Productivity Indices

Sunflower (Helianthus annuus L.) holds a prominent place in global agriculture as one of the most important crops from economical and alimentary aspect and is highly demanded both on domestic and international markets. Current study focuses on the analysis of morphological and productivity characteristics for a number of sunflower hybrids obtained in AMG-Agroselect Comerts SRL breeding programs. The values for the main biometric parameters were analyzed. Evaluation of the productivity indices demonstrates lower values in 2020 for most parameters of produc-tivity compared to 2019, specific climatic conditions of the mentioned year explain this fact. ‘Nistru’ hybrid in 2019 showed the best performance in four cases (leaf number, capitulum diameter, seed weight per capitulum and TKW). ‘Zimbru’ hybrid showed minimal values in five cases (plant height, ca-pitulum diameter, seed weight per capitulum, seed number per capitulum and TKW).

The optimum foliar zinc source and level for improving Zn content in seed of chickpea

2015 ◽  
Vol 38 (6) ◽  
Author(s):  
Nihal Kayan ◽  
Nurdilek Gulmezoglu ◽  
Mehmet Demir Kaya
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Harvest Index ◽  
Foliar Application ◽  
Seed Number ◽  
Plant Seed ◽  
Zn Content ◽  
Pod Number

The comparative effect of 0, 0.2, 0.4, 0.6 and 0.8% Zn levels of zinc chelate (Zn-EDTA; 8% Zn) and zinc sulfate (23% Zn) applied as foliar sprays for assuaging zinc deficiency of chickpea cv. Gökçe was evaluated under field condition. The sprays were applied on the plants before blooming stage during 2012 and 2013 growing seasons and seed yield, yield components like plant height, pod number per plant, seed number per plant, hundred seed weight, harvest index and mineral concentrations (nitrogen, phosphorus, zinc and iron) in seeds were investigated. Plant height, pod number per plant, seed number per plant, hundred seed weight, harvest index and seed yield were investigated. The results showed that increased zinc doses caused an increase in Zn content of seed, while seed yield was not affected similarly. In general, plant height, pod number and seed number per plant increased by the application of zinc. Lower dose of Zn-EDTA and higher dose of ZnSO<sub>4</sub> gave higher yield components. Seed weight, harvest index and seed yield were not significantly influenced by Zn sources and doses; however, mineral concentration of seeds enhanced when Zn doses were increased. It was concluded that foliar application of zinc resulted in an increase in seed mineral contents rather than seed yield of chickpea. The dose of 0.6% with Zn-EDTA was the optimum combination for Zn enrichment in seed of chickpea.

Effects of Green-stage Grazing on Rainfed Barley in Northern Syria. I. Tiller Production and Other Agronomic Characters

1989 ◽  
Vol 25 (4) ◽  
pp. 493-500 ◽  
Author(s):  
S. K. Yau ◽  
M. S. Mekni ◽  
I. Naji
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Unit Area ◽  
Seed Number ◽  
Agronomic Characters ◽  
Barley Landraces ◽  
Green Stage ◽  
Tiller Mortality

SUMMARYEffects of simulated and actual grazing at the tillering stage on tiller production and other agronomic characters were studied over a number of seasons at two sites in northern Syria with two local barley landraces. In general, grazing encouraged tiller production but reduced head number per unit area because of a higher tiller mortality or infertility. Seed number per head and seed weight were not affected by grazing except in one season. Grazing delayed heading and maturity and reduced plant height. Simulated and actual grazing produced similar effects on the different characters investigated.

scholarly journals Strategies to select soybean segregating populations with the goal of improving agronomic traits

2018 ◽  
Vol 40 (1) ◽  
pp. 39324
Author(s):  
Fabiana Mota da Silva ◽  
Elise De Matos Pereira ◽  
Bruno Henrique Pedroso Val ◽  
Dilermando Perecin ◽  
Antonio Orlando Di Mauro ◽  
...  
Keyword(s):  
Plant Height ◽  
Genetic Gain ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Block Design ◽  
Selection Strategy ◽  
Breeding Programs ◽  
Effective Selection ◽  
100 Seed Weight ◽  
Number Of Branches

The success of breeding programs depends on selection procedures and on the breeding methods adopted for selecting segregating populations. The objective of this study was to evaluate the efficiency of the Bulk method with selection in the F3 generation (BulkF3) compared to that of Bulk method as well as determine the most effective selection strategy in terms of genetic gain. Twenty segregating populations were selected by two methods. The 60 best families of each method were selected according to their average agronomic performance. An augmented block design was used. The following agronomic traits were evaluated: insertion height of first pod, plant height at maturity, number of branches and of pods per plant, 100-seed weight, and grain yield. For comparison of the methods, genetic component estimates, genetic gain and predicted breeding values were calculated using mixed models (REML and BLUP). The results showed the families obtained with the BulkF3 method were more productive, showed suitable plant height, a larger number of branches and pods, and higher 100-seed weight. The BulkF3 method was found to be an effective selection strategy for soybean improvement. 

scholarly journals Evaluation of Several Agronomic Traits in ‘Essex’ By ‘Forrest’ Recombinant Inbred Line Population of Soybean [Glycine max (L.) Merr.]

2017 ◽  
Vol 1 (1) ◽  
pp. 13-17
Author(s):  
Ivey Sherrie ◽  
Ouertani Khaled ◽  
Evandrew Washington ◽  
Patricia Lage ◽  
Samantha Woods ◽  
...  
Keyword(s):  
Flowering Time ◽  
Plant Height ◽  
Inbred Line ◽  
Recombinant Inbred Line ◽  
Recombinant Inbred ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Complex Trait ◽  
Breeding Programs ◽  
The Mean

Crop yield is a polygenic complex trait and its improvement is a major goal of breeding programs. The objective of this study was to compare yield and its components along over a period of four years (2007-2010) in three locations in North Carolina using the ‘Essex’ by ‘Forrest’ recombinant inbred line (RIL) population of soybean (ExF, n=94). The RILs distribution for all traits showed higher means than their respective mid-parental values but do not differ significantly at P<0.05. Nearly 45% of the lines germinated later than 6 days which is the mean for the slower germinating parent, Essex. In approximately 63%, the first flower appeared at 52.5 days, which is the mean mid-parental value. As for seed weight, RILs showed better performance than parental lines and 46% of the plants exceeded the higher yielding parent, Forrest. Seed weight showed the highest level of variation ranging from 54.1% for year to 70.7% for genotype. The lowest coefficients of variation (CVs) on average were calculated for flowering time and did not exceed 31.6%. In contrast , the year of the experiment caused the lowest level of variation for the traits studied while the genotype caused the highest level of variation. Seed germination was positively correlated with plant height (r=0.441 at P<0.001) and negatively correlated with both flowering time (r=-0.374 at P<0.001) and seed weight (r=-0.357 at P<0.001) across environments. Flowering time was found negatively correlated with plant height (r=-0.579 at P<0.001) and positively correlated with seed weight. The ExF population performed well in all environments compared to other populations tested in the same environments. The results presented here can be beneficial to NC soybean breeding programs that aim to create superior high yielding and disease free cultivars adapted to several NC environments.

scholarly journals Combining ability and heterosis in common bean cultivars

2008 ◽  
Vol 43 (9) ◽  
pp. 1143-1150 ◽  
Author(s):  
Maria Celeste Gonçalves-Vidigal ◽  
Lucas Silvério ◽  
Haroldo Tavares Elias ◽  
Pedro Soares Vidigal Filho ◽  
Marcus Vinícius Kvitschal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Plant Height ◽  
Combining Ability ◽  
Yield Components ◽  
Seed Weight ◽  
Genetic Effects ◽  
Breeding Programs ◽  
Combining Abilities ◽  
Number Of Seeds

The objective of this work was to determine the combining ability and heterosis, for productivity and yield components, in diallel hybrids derived from crossings between BRSMG-Talismã, IPR Uirapuru, FT Soberano, BRS Campeiro, IAC Tybatã, and IPR Juriti parent cultivars. Fifteen hybrids were generated from diallel crosses, excluding reciprocals. The general and specific combining abilities were significant for plant height, number of pods per plant, number of seeds per plant, number of seeds per pod, 50-seed weight, and grain yield, indicating the occurrence of both additive and nonadditive genetic effects. The best strategy to be adopted is the use of BRS Campeiro, FT Soberano and BRSMG-Talismã cultivars in common bean breeding programs involving selection. The most promising combinations were 'IPR Uirapuru' x 'IAC Tybatã', 'IPR Uirapuru' x 'FT Soberano', 'BRS Campeiro' x 'IPR Juriti', and 'BRS Campeiro' x 'IAC Tybatã'. The parents of these hybrids presented high estimates of specific combining abilities. Hybridization of cultivars belonging to distinguished commercial groups propitiates higher heterosis values in the segregant population.

scholarly journals Сравнительная оценка засухоустойчивости местных сортов кукурузы

2021 ◽  
Author(s):  
Елена Былич ◽  
Keyword(s):  
Comparative Analysis ◽  
Drought Tolerance ◽  
Plant Height ◽  
Resistance Genes ◽  
Climatic Conditions ◽  
Limiting Factor ◽  
Genotypic Differences ◽  
Local Varieties ◽  
Biometric Parameters ◽  
Yield Parameters

The paper presents the results of assessing local varieties of corn for drought tolerance. Samples of the collection were tested in the field in the agro-climatic conditions of 2020. The criterion of re-sistance was the genotypic differences of the samples of such biometric parameters as: plant height; the number of productive ears; ear weight; weight of 1000 grains. The influence of the limiting factor reduced the number of productive ears (on average for varieties to 0,48). A positive correlation of this indicator with the weight of the ear (r = 0,77) and the weight of 1000 grains (r = 0,43) was determined. Four varie-ties were identified that exceeded the standard in terms of the weight of the ear and four in terms of the weight of 1000 grains. As a result of a comparative analysis of yield parameters after exposure to drought, four local varieties were identified that can serve as donors of resistance genes.

scholarly journals Significance of varieties in technology of growing parsley

2021 ◽  
Vol 1 (99) ◽  
pp. 47-58
Author(s):  
V. V. Ketskalo ◽  
◽  
A. G. Ternavskyi ◽  
Т. V. Polischuk
Keyword(s):  
Plant Height ◽  
Plant Development ◽  
Total Yield ◽  
Growing Season ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Biometric Parameters ◽  
Leaf Mass ◽  
Genetic Features ◽  
The Right

In order to obtain a significant level of parsley yield in the Right-Bank Forest-Steppe of Ukraine, it is necessary to select varieties in accordance with soil and climatic conditions of cultivation. The comparative estimation of productivity of grades of parsley of sheet foreign selection in the specified conditions is carried out. The results of phenological observations of plant development, their biometric parameters depending on the genetic features are presented. The possibility of growing the studied varieties of leaf parsley of foreign selection in the conditions of the Right-Bank Forest-Steppe of Ukraine has been established. From the presence of mass shoots to the last harvest, the studied varieties had a growing season of 128–155 days. The first harvest was carried out 61–74 days after the mass germination. Aromatic and Vega varieties proved to be faster growing. The leaf mass of Orpheus and Fest was slightly slower. Vega and Orpheus plants had the lowest height – 23.6 cm and 25.4 cm, respectively. The next to increase the height of the leaf rosette was the Fest variety, whose plants reached 33.9 cm. The plants of the Pione variety were 35.1 cm high. The highest plant height in the experiment was Argon and Aromatnaya – 36.2 cm and 36.4 cm, respectively. Vega and Orpheus plants had the lowest productivity – 114 g and 160 g, respectively. The next variety as the productivity of the plant increased was the variety Argon with an index of 195 g. The plants of the control variety Aromatnaya had a productivity of 227 g. The plants of the varieties Fest and Pione had the highest productivity – 253 g and 255 g, respectively. The total yield of parsley leaf mass in the experiment averaged 5.01–10.20 kg/m2. Vega was the lowest and Fest and Pione the lowest.

STUDY OF EFFECT OF EMS, MMS AND GR ON YIELD CONTRIBUTING TRAITS IN URDBEAN, VIGNA MUNGO

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
A. B. SAGADE
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Inhibitory Effect ◽  
Individual Plant ◽  
Mean Values ◽  
Methane Sulphonate ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

The study of the effect of three well known mutagens, ethyl methane sulphonate (EMS), methyl methane sulphonate (MMS) and gamma rays (GR) on the yield contributing traits of the urdbean variety TPU-4 were carried out in the M3 generation. Effect of selected mutagenic treatments/doses of EMS (0.02, 0.03 and 0.04 M), MMS (0.0025, 0.05 and 0.01 M) and (GR) (30, 40 and 50 KR) on different yield contributing traits like plant height, plant spread, number of pods per plant, pod length, number of seeds per pod, seed yield per plant and 100 seed weight were analyzed in the M3 populations of the variety TPU-4. Seeds of M2 plants and control were harvested separately and sown to raise M3 population.. Genetic variabilty in the mutagen administered M3 progeny of the urdbean variety TPU-4 was analyzed by employing statistical methods. Data on mean values and shift in the mean of seven quantitative traits was evaluated on individual plant basis. The experimental findings revealed that concentrations / dose of the all these mutagens showed inhibitory effect on plant height, number of pods per plant, pod length and number of seeds per pod. Lower concentrations of mutagens exerted a promotory effect on plant spread, 100 seed weight and seed yield per plant while higher concentrations of these mutagens inhibited them to different extent.

scholarly journals GENERAL AND SPECIFIC COMBINING ABILITY IN SUNFLOWER (Helianthus annuus L.) / APTITUD COMBINATORIA GENERAL Y ESPECÍFICA EN EL GIRASOL (Helianthus annuus L.) / APTITUDE À LA COMBINATION GENERAL ET SPECIFIQUE CHEZ LE TOURNESOL (Helianthus annuus L.)

Helia ◽  
2001 ◽  
Vol 24 (34) ◽  
pp. 1-16 ◽  
Author(s):  
Domenico Laureti ◽  
Andrea Del Gatto
Keyword(s):  
Helianthus Annuus ◽  
Combining Ability ◽  
Central Italy ◽  
Specific Combining Ability ◽  
First Year ◽  
Male Sterile ◽  
Breeding Programs ◽  
East Central ◽  
Helianthus Annuus L ◽  
Selection For

SUMMARYA total of 245 test cross progenies obtained by crossing cytoplasmic male sterile (CMS) lines and restorer (RHA) lines were evaluated in replicated trials in 1995 and 1997. Experiments were carried out in two locations (Osimo, East Central Italy and Budrio, Northern Italy) in 1995, whereas in 1997 trials were conducted only in Osimo. General combining ability (GCA) and specific combining ability (SCA) of the parents was evaluated to identify genotypes suitable to be used as testers for breeding programs and to verify the performance of hybrids. The results obtained in 1995 were used to make test crosses in 1996 to be evaluated in 1997. The GCA and SCA of RHA and CMS lines were nearly always significant for all the studied traits when lines were randomly taken in 1995. When selected testers were used on the basis of the results of the first year, the SCA of new RHA lines and GCA of new CMS lines were not significant for achene yield, but they were for the other traits.The best GCA estimates for RHA were often higher than those of CMS, indicating that selection for RHA could be more useful than for CMS. As expected, GCA was always lower than SCA. CMS and RHA, with high variance among their test crosses for yield and many other traits, could be used as testers. The lack of a tester with high variance in all traits requires more than one tester in evaluating lines. The GCA of a line can change in function of the germplasm with which it is combined.

EFFECT OF SOLID AND LIQUID ORGANIC FERTILIZER ON GROWTH, YIELD AND YIELD COMPONENTS OF ROSSELLE (Hibiscus sabdariffa L.) IN THE NIGERIAN SAVANNAH

2021 ◽  
Vol 5 (2) ◽  
pp. 428-439
Author(s):  
K. M. Ladan ◽  
M. G. Abubakar ◽  
J. Suleiman
Keyword(s):  
Growth Rate ◽  
Plant Height ◽  
Seed Weight ◽  
Organic Fertilizer ◽  
Poultry Manure ◽  
Dry Weight ◽  
Assimilation Rate ◽  
Area Index ◽  
Net Assimilation ◽  
100 Seed Weight

The Study was conducted to evaluate the effect of solid and liquid organic fertilizer on growth and yield of rosselle in 2016 cropping season at Institute of Agricultural Reserve Zaria, Samaru (11011’N 07038E and 686m) and Institute of Horticultural Research Farm Bagauda (12000’N 8031”Em 488m) in Northern Guinea Savannah and Sudan Savannah Ecological Zones of above sea level Nigeria. Treatments consisted of four levels of solid poultry manure (0.0, 1.0, 2.0 and 3.0) tons/ha and five levels of liquid organic manure from Grand Total Organic Fertilizer Limited (0.0, 0.5, 1.0, 1.5 and 2.9) litres/ha, which were factorially combined in a randomized complete block design (RCBD) and replicated three times. Data on growth parameter were collected on plant height (cm), plant dry weight (g), leaf Area index crop growth rate (CGR) Relative Growth Rate (RGR) and Net assimilation rate (NAR) while data on yield parameters like number of calyx per pant, 100 seed weight (g) and  calyx yield per hectare kg/ha were collected. Results showed that plant height, plant dry weight(g), 100 seed weight(g) and calyx dry yield kg/ha had a significant increase with application of 2.0 litres/ha of liquid fertilizer than other rates. While application of solid poultry manure at 3.0ton/ha significantly increases plant height, net assimilation rate, leaf area index and calyx dry weight when compared with other rates. From the results obtained, the combination of 2.0 litres/ha liquid organic fertilizer and 3.0 ton/ha solid poultry manure produce the highest calyx yield at both location.

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