scholarly journals Allelopathy of vegetable residues on the sowing properties of soft winter wheat grain

2021 ◽  
Vol 1 (98) ◽  
pp. 246-254
Author(s):  
V. V. Liubych ◽  
◽  
H. M. Hospodarenko
Keyword(s):  
Germination Rate ◽  
Control Level ◽  
Variation Coefficient ◽  
Soft Wheat ◽  
Seedling Vigor ◽  
Percentage Germination ◽  
Wheat Grain ◽  
Sunflower Stalks ◽  
Soft Winter Wheat ◽  
Stalk Length

Aim. To study the allelopathy of vegetable residues on sowing properties of soft wheat grain. Methods. Laboratory, mathematical and statistical, physical. Results. The highest germination energy was obtained in the variant with water, corn and wheat stalks – 100%, percentage germination was 95%. Under conditions of germination in rye, rape and oat stalks, percentage germination was 15–30 % points lower compared to the control. Germination of soft wheat grain in the stalks of other crops provided percentage germination of 15–50 %. Obviously, soybeans, sunflowers, mustard, peas, barley, flax, safflower, buckwheat and sorghum show high allelopathy during the germination of soft wheat grain. The highest seedling vigor was obtained during germination in water and in corn stalks – 50 %. This figure in wheat and rye stalks was 33 and 28 %, respectively, or 17–22 points lower than the control. During the germination of soft wheat grain in the stalks of other crops, the seedling vigor was the lowest – 8–22 %. The average germination rate varied inversely proportional to seedling vigor. On average, wheat grain in corn stalks germinated for 29 minutes which was at the control level. During germination in wheat and rye stalks, it grew for up to 43–58 minutes. During germination in the stalks of other crops, the average speed increased to 72–288 minutes. Different germination substrates changed the parameters of soft wheat stalks. This indicator was at the level of control over grain germination in rye and corn stalks – 9.2–9.3 cm with fluctuations from 8.1 to 10.3–10.4 cm, and the variation coefficient was small (V = 12.0–12.5 %). The stalk length was significantly shorter during germination in wheat stalks, but the variation coefficient was insignificant (V = 5.2 %). During germination in the stalks of other crops, the stalk length decreased from 7.3 to 0.6 cm. Coclusions. Germination of wheat grain in corn and wheat stalks did not affect the deterioration of germination. The lowest allelopathy was shown by grain germination in rye stalks. The highest allelopathy was shown by germination in soybean and sunflower stalks. Crops, according to the influence on the length of soft wheat stalk, are arranged in the following order: sunflower, buckwheat, sorghum, safflower, soybean, mustard, flax, oats, rape, barley, peas, wheat. Grain germination in corn and rye stalks did not affect the length of soft wheat stalks

NEW GENETIC SOURCES FOR SOFT WINTER WHEAT GRAIN HIGH YIELD

2021 ◽  
pp. 40-46
Author(s):  
Victor I. Kovtun ◽  
Lyudmila N. Kovtun ◽  
Kristina A. Mayorova
Keyword(s):  
Winter Wheat ◽  
High Yield ◽  
Wheat Grain ◽  
Soft Winter Wheat

scholarly journals Evaluation of new promising varieties of soft winter wheat breeding NSC "Institute of agriculture NAAS" for valuable economic traits

2021 ◽  
Author(s):  
A. Golodna ◽  
◽  
L. Holyk ◽  
◽  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Drought Resistance ◽  
Grain Quality ◽  
Winter Hardiness ◽  
Soft Wheat ◽  
Wheat Varieties ◽  
New Varieties ◽  
Soft Winter Wheat ◽  
High Yields

Winter soft wheat is one of the most important crops. New varieties of wheat should be characterized by a set of valuable economic characteristics, but the most relevant is the creation of varieties with high yields and grain quality, resistant to a complex of diseases and other negative factors. The aim of the study was to evaluate new promising varieties of winter soft wheat breeding of the NSC "Institute of Agriculture NAAS" for grain yield, winter hardiness, disease resistance and grain quality. Experimental studies were conducted at the NSC "Institute of Agriculture NAAS" in 2016-2020, research fields are located in the Fastiv district of Kyiv region. Different weather conditions over the years of research have contributed to a better and more comprehensive assessment of varieties on a set of valuable economic characteristics. During field experiments, the generally accepted technology of growing winter wheat was used. The area of the competitive variety testing site was 20.0 m2, repeated four times. Field, measuring and weighing, laboratory and mathematical and statistical methods were used during the research. In 2018, new varieties of soft winter wheat Krasunia Poliska, Mokosha, Pyriatynka, Fortetsia Poliska, Efektna and in 2020 the variety Zemlerob were transferred to the Ukrainian Institute of Plant Variety Examination for qualification examination. Varieties created in NSC "Institute of Agriculture NAAS" by the method of hybridization using as parent components varieties and lines of local and foreign breeding. The variety Krasunia Poliska, belongs to the Lutescens type, is characterized by high drought resistance, resistance to lodging, germination on stumps, grain shedding. The Mokosha variety, belongs to the Lutescens type, has high drought resistance, is resistant to lodging, germination on stumps and grain shedding. Variety Pyriatynka, belongs to the Lutescens type, has high drought resistance, resistance to lodging, germination on the stump, shedding. Fortetsia Poliska, belongs to the Alborbrum type, is characterized by high drought resistance, resistance to lodging, germination on the stump and shedding of grain. Variety Efektna, belongs to the Erythrospermum type, is short (plant height 64-80 cm), characterized by high drought resistance, resistance to lodging, germination on the stump, shedding. The variety of winter soft wheat Zemlerob, belongs to the Lutescens type, has high drought resistance, resistant to lodging, germination on the stump, shedding of grain. The highest grain yield on average over the years of testing was obtained in the variety Fortetsia Poliska - 7.31 t / ha, varieties Pyriyatynka and Zemlerob with indicators of 7.10 and 7.06 t / ha, respectively, were distinguished by high yields. The yields of Mokosha, Effektna and Krasunia Poliska ranged from 6.27 to 6.95 t / ha. According to the increased winter hardiness, the best varieties are Pyriatynka, Krasunia Poliska, Mokosha and Efektna with a score of 8.0-8.2 points. In the varieties Fortetsia Poliska and Zemlerob the score for winter hardiness was 7.8-7.9 points. Estimation of powdery mildew showed that the maximum percentage of lesions on average over the years of research was found in the variety Mokosha (25.5%). As the most stable selected varieties Efektna, Lisova pisnia, Pyriatynka and Fortetsia Poliska (1.7-11.6%). In terms of resistance to brown rust, all varieties showed high resistance, the damage did not exceed 8.0%. The most stable variety was Efektna (0.3%). The greatest damage to winter wheat varieties was found in leaf septoria, which ranged from 19.0 to 39.3%. The greatest resistance to this disease is determined in the cultivar Zemlerob. New wheat varieties should also be characterized by high levels of protein, gluten and other valuable traits that ensure grain quality. The highest protein content was determined in the grains of the varieties Efektna (11.67%), Mokosha (11.62%) and Krasuni Poliska (11.54%). According to the increased content of gluten, the varieties Krasunia Poliska, Lisova pisnia, Mokosha (19.22-19.66%) were distinguished. According to the highest indicators of sedimentation, the varieties Krasunia Poliska, Pyriatynka and Mokosha (34.50-34.84 %) should be noted, these varieties are also the best in terms of a comprehensive assessment of grain quality. New varieties of soft winter wheat Krasunia Poliska, Mokosha, Pyryatynka, Fortetsia Poliska, Efektna and Zemlerob breedibg of NSC "Institute of Agriculture NAAS" are characterized by high grain yield (up to 7.31 t / ha), increased winter hardiness and disease resistance, as well as good indicators of grain quality: protein content - up to 11.67%; gluten - up to 19.66%. The introduction of these varieties into production will allow to obtain high yields of quality grain.

scholarly journals Thermal stress and physiological changes in watermelon seeds

2018 ◽  
Vol 48 (1) ◽  
pp. 66-74 ◽  
Author(s):  
Rita de Cássia Barbosa da Silva ◽  
Marcelo do Nascimento Araujo ◽  
Fábio Luiz Santos Ornellas ◽  
Bárbara França Dantas
Keyword(s):  
Enzyme Activity ◽  
Thermal Stress ◽  
Germination Rate ◽  
Germination Percentage ◽  
Initial Growth ◽  
Physiological Changes ◽  
Percentage Germination ◽  
Stress Protection ◽  
Evaluation Parameters ◽  
The Ideal

ABSTRACT Given that watermelon is a crop widespread around the world, there is considerable interest in verifying how its seeds physiologically behave under unfavorable temperature conditions. This study aimed to evaluate the biochemical changes mobilization and reserves degradation, as well as the enzyme activity, during seed germination and initial growth of watermelon seedlings subjected to thermal stress, using temperature, germination percentage, germination rate and relative germination frequency over the incubation time as evaluation parameters. The experimental design was completely randomized, in a 5 x 3 factorial scheme, with five temperatures (17 ºC, 20 ºC, 25 ºC, 30 ºC and 35 ºC) and three cultivars (Charleston Gray, Fairfax and Crimson Sweet), with 4 replicates of 50 seeds. Germination, seedling growth, reserve degradation and stress protection system were evaluated. Thermal stress caused deleterious effects on watermelon seeds with germination capacity at well defined temperature limits, being 25 ºC the ideal temperature, with the highest percentage of normal seedlings. Sub- (17 ºC) and supra-optimal (30 ºC) temperatures presented more than 80 % of abnormal seedlings. The α-amylase enzyme activity is intense only at the beginning of germination. Under thermal stress, the proline contents increase mainly in the cotyledons.

Preservation of dormancy in freshly harvested wheat grain

1983 ◽  
Vol 34 (1) ◽  
pp. 33 ◽  
Author(s):  
DJ Mares
Keyword(s):  
Moisture Content ◽  
Germination Rate ◽  
Freeze Storage ◽  
Wheat Grain ◽  
C Storage ◽  
Freezing Treatment ◽  
Time Of Harvest

Freshly harvested grain from 14 varieties of wheat was stored in a deep-freezer at 15�C, or alternatively, in an air-conditioned seed room at 12�C for periods of up to 9 months. Freeze-storage preserved the germination rate of hand-threshed grain at the level observed at harvest, provided that the moisture content of the grain had reached 12%. When frozen grain was transferred to 12�C storage, its germination rate improved with time in parallel with changes observed in freshly harvested seed stored at 12�C from the time of harvest, i.e. after-ripening was not adversely affected by the freezing treatment. This technique should enable greater quantities of material to be screened for low germinability at harvest ripeness and for tolerance to pre-harvest sprouting damage. It also allows the provision of a continuous supply of uniform material for investigations of dormancy and grain after-ripening.

Utilization of Highly Deoxynivalenol-Contaminated Wheat Via Extrusion Processing

1999 ◽  
Vol 62 (12) ◽  
pp. 1485-1487 ◽  
Author(s):  
M. ACCERBI ◽  
V. E. A. RINALDI ◽  
P. K. W. NG
Keyword(s):  
Extrusion Process ◽  
Sodium Bisulfite ◽  
Extrusion Cooking ◽  
Wheat Grain ◽  
Extrusion Processing ◽  
High Temperature And Pressure ◽  
Temperature And Pressure ◽  
Soft Winter Wheat ◽  
Extruded Products ◽  
Natural Metabolite

Deoxynivalenol (DON) is a toxic natural metabolite produced by Fusarium graminearum. In this study we investigated the effects of sodium bisulfite and extrusion cooking under high temperature and pressure on DON levels in wheat grain and mill fractions. Samples of highly naturally DON-contaminated soft winter wheat were soaked for 1 h in water or aqueous sodium bisulfite (SB) solutions (0.5, 1.5, 2.5, or 5% SO2 equivalent) and extruded. The soaking treatment with SB solution (5% SO2 equivalent) lowered DON from 7.3 μg/g to 0.8 μg/g without extrusion and to 0.3 μg/g with an extrusion process. When the contaminated kernels were tempered with water or SB solutions (5 or 10% SO2 equivalent) and milled, the flour samples, as expected, showed lower levels of DON (from 7.3 to 3.1 μg/g). Extrusion of milled flour and whole meal samples, both obtained from SB-tempered wheat, did not change DON levels significantly under the studied extrusion conditions as compared to the nonextruded milled flour and whole meal samples. However, the extrusion process can be utilized to remove moisture and/or odor of chemicals used in the soaking solutions and to produce potentially useful extruded products.

Involvement of Phenolic Compounds in Anaerobic Flooding Germination of Rice (Oryza sativa L.)

2016 ◽  
Vol 56 ◽  
pp. 73-81 ◽  
Author(s):  
Do Tan Khang ◽  
Pham Thi Thu Ha ◽  
Nguyen Thi Lang ◽  
Phung Thi Tuyen ◽  
Luong The Minh ◽  
...  
Keyword(s):  
Phenolic Acids ◽  
Germination Rate ◽  
Syringic Acid ◽  
Seedling Vigor ◽  
High Concentration ◽  
Rice Varieties ◽  
Shoot Height ◽  
Phenolic Profiles ◽  
Total Difference ◽  
Phenolic And Flavonoid

By this study, thirty rice varieties were evaluated for anaerobic flooding tolerance using the direct sowing method. Phenolic profiles of strong and weak tolerant varieties were identified and compared based on HPLC chromatograms. The germination rates and shoot heights of rice were recorded for calculating the seedling vigor, which indicate the tolerant ability of rice in flooding condition. The results revealed a high variation of germination rate (10.01 to 100%), shoot height (0.35 to 78.17 mm) and seedling vigor (0.05 to 72.83). There was a high correlation between (r = 0.71) germination rate in 5 cm and 10 cm flood. Phenolic and flavonoid contents of the strong tolerant cultivar significantly and proportionally increased in the flooding levels (5 cm and 10 cm). There was a total difference in terms of number of phenolic acids found in the strong and weak tolerant varieties. In particular, six phenolic acids (gallic acid, catechol, caffeic acid, syringic acid, vanillin, and ellagic acid) were only identified with high concentration in the strong tolerant cultivar. The findings suggest that the phenolics presented in the strong tolerant varieties probably have a certain function in response and adaptation to anaerobic flooding condition. Further researches on exogenous application of these phenolic acids to increase the flooding tolerant level of rice should be continued at both green house and field treatments.

Germination in Stylosanthes humilis Populations in the Presence of NaCl

1994 ◽  
Vol 42 (6) ◽  
pp. 717 ◽  
Author(s):  
MB Lovato ◽  
PS Martins ◽  
Filho JPD Lemos
Keyword(s):  
Salt Tolerance ◽  
Significant Variation ◽  
Germination Rate ◽  
Natural Populations ◽  
Germination Percentage ◽  
Percentage Germination ◽  
North East ◽  
Germination Response ◽  
Stylosanthes Humilis

The germination response to NaCl treatments (0, 67, 134, 201 and 268 mol m-3) was investigated in 6 natural populations of Stylosanthes humilis from 3 ecogeographic regions of Pernambuco State, north-east Brazil. In general, salt tolerance was high, with percentage germination unaltered up to 67 mol m-3 NaCl in 2 populations and unaltered up to 134 mol m-3 NaCl in the remaining 4. The estimated concentration which reduced percentage germination to 50% varied between populations from 200 to 295 mol m-3 NaCl. Salt affected germination rate even more than it did the germination percentage, being altered at 67 mol m-3 NaCl in all populations. The germination rate was reduced to 50% in the range of 131-176 mol m-3 NaCl. There was a significant variation in salt tolerance between these natural populations, and no relation was found between salt tolerance of the populations and the aridity of their provenance.

scholarly journals Association mapping of germinability and seedling vigor in sorghum under controlled low-temperature conditions

Genome ◽  
2016 ◽  
Vol 59 (2) ◽  
pp. 137-145 ◽  
Author(s):  
Hari D. Upadhyaya ◽  
Yi-Hong Wang ◽  
Dintyala V.S.S.R. Sastry ◽  
Sangam L. Dwivedi ◽  
P.V. Vara Prasad ◽  
...  
Keyword(s):  
Seed Germination ◽  
Low Temperature ◽  
Cold Tolerance ◽  
Germination Rate ◽  
Strong Association ◽  
Marker Locus ◽  
Seedling Vigor ◽  
Mini Core Collection ◽  
Genome Wide ◽  
Soil Temperatures

Sorghum is one of the world’s most important food, feed, and fiber crops as well as a potential feedstock for lignocellulosic bioenergy. Early-season planting extends sorghum’s growing season and increases yield in temperate regions. However, sorghum’s sensitivity to low soil temperatures adversely impacts seed germination. In this study, we evaluated the 242 accessions of the ICRISAT sorghum mini core collection for seed germination and seedling vigor at 12 °C as a measure of cold tolerance. Genome-wide association analysis was performed with approximately 162 177 single nucleotide polymorphism markers. Only one marker locus (Locus 7-2) was significantly associated with low-temperature germination and none with vigor. The linkage of Locus 7-2 to low-temperature germination was supported by four lines of evidence: strong association in three independent experiments, co-localization with previously mapped cold tolerance quantitative trait loci (QTL) in sorghum, a candidate gene that increases cold tolerance and germination rate when its wheat homolog is overexpressed in tobacco, and its syntenic region in rice co-localized with two cold tolerance QTL in rice. This locus may be useful in developing tools for molecular breeding of sorghums with improved low-temperature germinability.

scholarly journals Effect of Seed Priming on Germination Properties and Seedling Establishment of Cowpea (Vigna sinensis)

2011 ◽  
Vol 3 (4) ◽  
pp. 113-116 ◽  
Author(s):  
Hamdollah ESKANDARI ◽  
Kamyar KAZEMI
Keyword(s):  
Laboratory Tests ◽  
Low Cost ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Laboratory Data ◽  
Seed Priming ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Seedling Vigor ◽  
Contributing Factors

Early emergence and stand establishment of cowpea are considered to be the most important yield-contributing factors in rainfed areas. Laboratory tests and afield experiment were conducted in RCB design in 2011 at a research farm in Ramhormoz, Iran, to evaluate the effects of hydropriming (8, 12 and 16 hours duration) and halo priming (solutions of 1.5% KNO3 and 0.8% NaCl) on seedling vigor and field establishment of cowpea. Analysis of variance of laboratory data showed that hydropriming significantly improved germination rate, seed vigor index, and seedling dry weights. However, germination percentage for seeds primed with KNO3 and non-primed seeds were statistically similar, but higher than those for NaCl priming. Overall, hydropriming treatment was comparatively superior in the laboratory tests. Invigoration of cowpea seeds by hydropriming and NaCl priming resulted in higher seedling emergence and establishment in the field, compared to control and seed priming with KNO3. Seedling emergence rate was also enhanced by priming seeds with water, suggesting that hydropriming is a simple, low cost and environmentally friendly technique for improving seed and seedling vigor of cowpea.

scholarly journals Effects of cycocel priming on growth and early development of rapeseed under drought stress

2013 ◽  
Vol 5 (1) ◽  
pp. 5-18
Author(s):  
Alireza Pourmohammad ◽  
Fariborz Shekari ◽  
Veeda Soltaniband
Keyword(s):  
Germination Rate ◽  
Dry Weight ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Stress Control ◽  
Positive Effects ◽  
The Third ◽  
Germination Characteristics ◽  
Three Stages ◽  
Total Dry Weight

Abstract An experiment was concluded to evaluate the effects of priming on germination characteristics and establishment of rapeseed seedlings during three stages. In the first and second stages of experiment, the effects at three factors vis: cultivars (RVS, Hayola), waterdeficit stress (Control,-6 and -12 bar) and cycocel treatment (dry seeds, 300, 600, 900, 1200 and 1500 μM) on germination and seedling growth of plant were assayed. The results showed that priming had positive effects on germination percentage, germination rate index, germination index, and radicle length under water-deficit conditions. RVS had greater efficiency than other cultivars. The third section of experiment revealed that the priming of RVS seeds improved the stem, root and dry weight, total dry weight as well as leaf number and area of seedlings.

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