scholarly journals Seed and fruit size affect soaking and physiological seed quality in Campomanesia adamantium?

2020 ◽  
Vol 42 ◽  
Author(s):  
Érica Fernandes Leão-Araújo ◽  
Eli Regina Barboza de Souza ◽  
Nei Peixoto ◽  
Wilhan Valasco dos Santos ◽  
Lílian Lúcia Costa ◽  
...  
Keyword(s):  
Seed Size ◽  
Seed Quality ◽  
Fruit Size ◽  
Intraspecific Variability ◽  
Confidence Bands ◽  
Transverse Diameter ◽  
Seedling Length ◽  
Seedling Growth Rate ◽  
Length Width ◽  
Total Seed

Abstract: The size of fruits and seeds can affect the seed germination process and aspects related to the vigor of the seedlings formed. Our aim was to characterize fruit and seed biometrics, evaluate the effect of seed size on soaking and the effect of seed size and temperature on the germination and vigor of Campomanesia adamantium . The fruit was evaluated to determine longitudinal diameter, transverse diameter, fresh mass and empty, full and total seed quantities. The seeds were sorted into small, medium and large classes and then measured for length, width, thickness and mass. Seeds from each class were submitted to the germination test at 25 and 30 °C. The germination and vigor (first count, germination speed index, mean germination time and seedling length) data were evaluated by analysis of variance and a means test. Seeds from each size class were weighed repeatedly during soaking. The soaking data were fit to logistic and Peleg models and best fit curves with confidence bands were constructed to compare the effect of seed size. Fruit morphology showed high intraspecific variability. Germination was not affected by seed size or test temperature. Large seeds yielded taller seedlings while the 25 °C germination temperature produced the highest seedling growth rate. The small and medium seeds showed all three phases of the soaking process. Finally, soaking was initially slower for the large seeds than for the small and medium seeds.

scholarly journals Fruit and Seed Biometrics and Influence on Germination of Artocarpus heterophyllus Lam. (Jackfruit)

2019 ◽  
pp. 1-6
Author(s):  
Uilian do Nascimento Barbosa ◽  
Ana Lícia Patriota Feliciano Marangon ◽  
Isabelle Maria Jacqueline Meunier ◽  
Luiz Carlos Marangon ◽  
Anderson Oliveira De Lima ◽  
...  
Keyword(s):  
Seed Size ◽  
Fruit Size ◽  
Seed Morphology ◽  
Field Observations ◽  
Germination Test ◽  
Artocarpus Heterophyllus ◽  
Length Width ◽  
Measured Length ◽  
Digital Caliper ◽  
Number Of Seeds

This work aimed to characterize the biometry of fruits and seeds of Artocarpus heterophyllus Lam. and to verify its influence on germination. The fruits were collected from the matrices trees in the Jardim Botânico do Recife (JBR), Pernambuco. From 10 pathogen-free A. heterophyllus matrices, 50 fruits (multiple fruits, which in the research were considered as single fruit) and 500 seeds were collected, being measured length, width and thickness, using a tape measure (for fruits ) and digital caliper (precision 0.001 mm) for the seeds, as well as weighing on a precision scale. The seeds were classified by size: Small (≤ 2.5 cm), medium (2.6 to 3 cm) and large (≥ 3.1 cm). The germination test was conducted in a greenhouse of the JBR, with a 50% shading screen. The container used was a 50 x 25 x 5 cm polypropylene tray with holes at the bottom to provide drainage. The obtained results allow inferring that the seed size did not influence the vigor on A. heterophyllus germination in a greenhouse. The variation found in fruit size and number of seeds per fruit, as well as field observations regarding fruit and seed morphology, pulp flavor and consistency, allows us to infer that there is a possibility of several varieties of the species occurring in the studied site.

scholarly journals Impact of Seed Size on the Seedling Vigour, Dry Matter Yield and Oil Content of Jatropha (Jatropha curcas L.)

2020 ◽  
Vol 12 (3) ◽  
pp. 197
Author(s):  
Aderemi I. Makinde ◽  
Kehinde O. Oyekale ◽  
David S. Daramola
Keyword(s):  
Seed Size ◽  
Dry Matter ◽  
Oil Content ◽  
Seedling Survival ◽  
Dry Matter Yield ◽  
Seedling Vigour ◽  
Yield Increase ◽  
Seedling Length ◽  
Seedling Growth Rate ◽  
Vigour Index

Seed size is a trait of the plant that affects seed germination and seedling survival. This study aims to assess the growth response of J. curcas to different seed sizes. A pot experiment was conducted to evaluate the effects of J. curcas seed sizes on the seedling vigour and seed component. The seeds were fractioned into three sizes visually into: large, medium and small and by 1000 seeds weight (SW). Seedling vigour was assessed by: germination % (G%), seedling length cm (SL), seedling vigour index, SVI, seedling growth rate, SGR, and speed of germination, SOG as well as proportion of cake, shell and oil content (OC) expressed as% of the seed. Results obtained shows that G% and the SOG were not affected by seed sizes but by other factors within the seed. However, seedling vigour expressed as SL, SVI and SGR increased significantly (P ≤ 0.05) with increase in seed sizes. Proportion of cake, shell and oil component of J. curcas seeds increased with increasing seed sizes while 60% of the seed is made up of the cake from where the oil is extracted. Dry matter yield, DMY significantly (P ≤ 0.05) increased with increase in seed size from 6.41 g/plant in large seeds to 2.61 g/plant in small seeds. There is positive and strong significant correlation between, SW and DMY (r = 0.91**), yield increase (r = 0.82**), OC (r = 0.85**), % cake (r = 0.94**). Findings revealed that larger seed had higher potential of producing vigorous plants with eventual high crop yield and higher OC.

scholarly journals Evaluation of Genotype, Environment, and Management Interactions on Fava Beans under Mediterranean Field Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1088
Author(s):  
Mohamed Houssemeddine Sellami ◽  
Antonella Lavini ◽  
Davide Calandrelli ◽  
Giuseppe De Mastro ◽  
Cataldo Pulvento
Keyword(s):  
Vicia Faba ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Quality ◽  
Sandy Loam ◽  
Sowing Date ◽  
South Italy ◽  
Vicia Faba L ◽  
Fava Beans ◽  
Total Seed

Faba beans (Vicia faba L.), also known as fava beans, like other crops, are influenced by several factors: their genotype, environment, and management, as well as the interaction between these, have an important impact on seed yielding and seed quality traits. This study was conducted at three locations in South Italy between 2017 and 2019 to evaluate the sowing date effect on yield and yield components of three Vicia faba L., originating from cool climates. The results showed that seed yield (SY) and yield components declined with sowing delay. The crop’s environment (year × site) and management (sowing date) were found to explain 34.01% and 42.95% of the total seed yield variation, respectively. The data showed that the tested genotypes were positively influenced by the environment with sandy loam soil and early winter sowing date, resulting in either a greater number of SY and THS than in the other environment. The three faba bean genotypes showed tolerance to winter frost conditions in the two growing seasons.

Jack pine cone quality and cache sizes of red squirrels in southern New Brunswick, Canada

1997 ◽  
Vol 75 (2) ◽  
pp. 332-335 ◽  
Author(s):  
Michael A. Setterington ◽  
Daniel M. Keppie
Keyword(s):  
New Brunswick ◽  
Pinus Banksiana ◽  
Seed Mass ◽  
Dry Mass ◽  
Jack Pine ◽  
Tamiasciurus Hudsonicus ◽  
Red Squirrels ◽  
Length Width ◽  
Total Seed ◽  
Number Of Seeds

Relationships between external cone characteristics (length, width, wet and dry mass), cone quality (total seed mass as a proportion of cone mass, total number of seeds per cone, total seed mass per cone), and number of cones in caches were evaluated for caches of jack pine (Pinus banksiana) cones belonging to red squirrels (Tamiasciurus hudsonicus) in two plantations in southern New Brunswick. Cone length and mass were good predictors of the total number of seeds per cone and total seed mass per cone. Length accounted for a small proportion of the variance of total seed mass as a proportion of cone mass. There was no relationship between the number of seeds or total seed mass per cone and the number of cones per cache.

scholarly journals IRRIGATION FREQUENCIES FOR Eucalyptus grandis SEEDLINGS

2020 ◽  
Vol 28 ◽  
pp. 364-374
Author(s):  
Gustavo Henrique Miguel da Cruz ◽  
Fernando França da Cunha ◽  
Epitácio José de Souza ◽  
Andrisley Joaquim da Silva ◽  
Roberto Filgueiras
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Irrigation Management ◽  
Eucalyptus Grandis ◽  
Volume Ratio ◽  
Crop Coefficient ◽  
Experimental Period ◽  
Dry Mass ◽  
Irrigation Depth ◽  
Total Seed

One of the bottlenecks in relation to the production of forest seedlings is irrigation, especially in less-tech nurseries. The small volumes of substrate, where the seedlings develop, lead to low water storage. This fact can lead to water deficit and significant losses in the production of seedlings, generating even mortality. The objective of this study was to determine the best irrigation frequencies for Eucalyptus grandis seedling production in less-tech nurseries. The experiment was conducted between 2013/08/04 and 2013/23/07 (106 days) and conducted in Chapadão do Sul county, Brazil. The experiment was set up in a randomized complete block design, with five replications. Four irrigation frequencies were tested: IF1 (one daily irrigation - 11:00 a.m.), IF2 (two daily irrigations - 11:00 a.m. and 7:00 p.m.), IF3 (three daily irrigations - 07:00 a.m., 11:00 a.m. and 7:00 p.m.) and IF4 (four daily irrigations - 07:00 a.m., 11:00 a.m., 3:00 p.m. and 7:00 p.m.). The sample units were composed of eight seedlings in 50 cm3 conical tubes filled with soil and vermiculite in a volume ratio of 1:1. The irrigation depth was estimated by reference evapotranspiration (Penman-Monteith) multiplied by a crop coefficient equal to two. Plant height, number of definitive leaves, shoot dry mass (root and total), seed quality index, survival and efficiency of water use by eucalyptus seedlings were evaluated. The average daily irrigation depth in the experimental period was 5.2 mm. Based on the results, it is recommended for eucalyptus seedling producers, in less-tech nursery, irrigation management twice per days. (11:00 a.m. and 7:00 p.m.).

scholarly journals Development of priming technology for enhanced planting value of seeds in kabuli chickpea (Cicer arietinum L.)

2021 ◽  
Vol 13 (2) ◽  
pp. 735-743
Author(s):  
Umesh Hiremath ◽  
Basave Gowda ◽  
Lokesh G.Y . ◽  
B. S. Ganiger
Keyword(s):  
Root Length ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Shoot Length ◽  
Growth And Yield ◽  
Seedling Vigour ◽  
Seedling Length ◽  
Vigour Index

The continuous rise in global population demands more food production under limited land resources accompanied by climate change. More oversupply of quality seeds to meet ever-growing food demand is a highly challenging task. Seeds with low vigour level limit the growth and yield of crops at varied field conditions. Hence, an experiment was conducted to develop a technique for the fast and homogeneous growth of kabuli chickpea seeds. The priming treatments evaluated in the present study enhanced the various seed quality parameters of kabuli chickpea significantly when compared to control. Hydro-priming for 4 hours (at 20°C) and air drying for 72 hours showed better results compared to rest of the treatments both in fresh seeds which recorded higher first count (66.38%), germination (92.50%) root length (11.85 cm), shoot length (6.16), mean seedling length (18.01), dry seedling weight (747 mg), seedling vigour index-I (1665), higher speed of emergence (0.3992) and old seeds with higher first count (61.88%), germination (74.13%) root length (8.15 cm), shoot length (5.85 cm), mean seedling length (14.00 cm), seedling dry weight (611 mg), seedling vigour index-I (1056), higher speed of emergence (0.3814). The aged seeds have recorded 29 % increase in germination percentage in contrast to 8 percent increases in fresh seeds. Kabuli chickpea seeds could be subjected to hydropriming, an affordable, alternative, and eco-friendly technique for improving seed and seedling vigour of kabuli chickpea.

scholarly journals Yield and physiological quality of wheat seeds after desiccation with different herbicides

2017 ◽  
Vol 39 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Fábio Henrique Krenchinski ◽  
Victor José Salomão Cesco ◽  
Danilo Morilha Rodrigues ◽  
Vinicius Gabriel Caneppele Pereira ◽  
Alfredo Junior Paiola Albrecht ◽  
...  
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Dry Mass ◽  
Wheat Crop ◽  
Glufosinate Ammonium ◽  
Randomized Block Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Wheat Seeds

Abstract: Some desiccation techniques for harvesting wheat may affect seed quality. The objective of this study was to evaluate the effect of different desiccant herbicides applied to the wheat crop and their effects on the production and seed quality. The experiment was conducted with cultivar COODETEC 150 (CD 150) in two sites in Palotina (Paraná state, Brazil) with a randomized block design consisting of 7 treatments (desiccation herbicides) and 4 replications. Desiccation was realized when 50% of the plants were in stage 80 with seeds in powdery or mass consistency. The variables analyzed were percentage of moisture content after harvest, Yield, hectoliter weight, mass of 100 seeds, vigor, germination, fresh mass of seedlings, dry mass of seedlings and root length. The herbicides carfentrazone-ethyl and clethodim were the ones that promoted greatest reduction in vigor. The herbicide paraquat caused reduction in seedling length. There was a reduction in the mass of 100 seeds for glufosinate-ammonium, clethodim, diquat and carfentrazone-ethyl. Glufosinate-ammonium, paraquat, glyphosate, clethodim and diquat caused reduction in yield. Desiccation of Cultivar CD 150 at stage 80 is not recommended, since plant Yield and physiological seed parameters were adversely affected by herbicides.

scholarly journals Size Variability in Seed Lot Impact Seed Nutritional Balance, Seedling Vigor, Microbial Composition and Plant Performance of Common Corn Hybrids

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 157
Author(s):  
Saveetha Kandasamy ◽  
Nimalka Weerasuriya ◽  
Daniella Gritsiouk ◽  
Greg Patterson ◽  
Soledad Saldias ◽  
...  
Keyword(s):  
Seed Size ◽  
Seed Quality ◽  
Nutritional Composition ◽  
Plant Performance ◽  
Growth Stages ◽  
Seedling Vigor ◽  
Microbial Composition ◽  
Corn Hybrids ◽  
Plant Vigor ◽  
Microbial Profile

Soils with highly uniform textural, physical, and chemical characteristics still give rise to crop stand variability. Seed quality is one of the factors adding to yield variability and has become a concern for corn growers. Hybrid seed producers claim that their seeds provide a uniformity in crop emergence and productivity, but they do not always provide detailed studies to support this claim. Based on growers’ concerns, we examined fields planted with three different hybrid varieties and found that 25% to 50% of the stand had relatively weak vigor, where seed variety A showed 15% of seedlings with lower vigor, and varieties B and C had 30% of seedlings with low vigor. These apparent differences in plant vigor prompted us to initiate a cursory investigation to identify how seed size influenced seedling vigor and if the seedling’s microbial profile played a role in the early growth stages of three commonly grown corn hybrids in Ontario. Seeds were separated based on size, prior to conducting a growth room study. Different sizes of seeds from the same seed lot showed significant differences in vigor capacity and related biometric components. Significant differences were also found in their nutritional composition and microbial profiles within the different seed sizes and the roots and shoots of seedlings derived from such seeds. The results clearly indicate that seed size greatly impacts the plant growth and its microbiome, resulting in seedlings with different plant vigor, microbiomes, and performance.

scholarly journals Increasing seed size and quality by manipulating BIG SEEDS1 in legume species

2016 ◽  
Vol 113 (44) ◽  
pp. 12414-12419 ◽  
Author(s):  
Liangfa Ge ◽  
Jianbin Yu ◽  
Hongliang Wang ◽  
Diane Luth ◽  
Guihua Bai ◽  
...  
Keyword(s):  
Seed Size ◽  
Seed Quality ◽  
Agronomic Traits ◽  
Soybean Seed ◽  
Amino Acid Content ◽  
Grain Legume ◽  
Model Legume ◽  
Plant Organs ◽  
Legume Seeds ◽  
Regulatory Module

Plant organs, such as seeds, are primary sources of food for both humans and animals. Seed size is one of the major agronomic traits that have been selected in crop plants during their domestication. Legume seeds are a major source of dietary proteins and oils. Here, we report a conserved role for the BIG SEEDS1 (BS1) gene in the control of seed size and weight in the model legume Medicago truncatula and the grain legume soybean (Glycine max). BS1 encodes a plant-specific transcription regulator and plays a key role in the control of the size of plant organs, including seeds, seed pods, and leaves, through a regulatory module that targets primary cell proliferation. Importantly, down-regulation of BS1 orthologs in soybean by an artificial microRNA significantly increased soybean seed size, weight, and amino acid content. Our results provide a strategy for the increase in yield and seed quality in legumes.

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