scholarly journals Influence of Some Pregerminaton Treatments on Seed Germination and Seedling Quality of Two Ornamental Palm Species Common in Egypt I- Golden Cane Palm (Chrysalidocarpus lutescens H. Wendl)

2016 ◽  
Vol 21 (1) ◽  
pp. 62-73
Author(s):  
Sayed Shahin ◽  
Hesham El-Tayeb
Keyword(s):  
Seed Germination ◽  
Seedling Quality ◽  
Palm Species

scholarly journals GERMINAÇÃO DE SEMENTES E QUALIDADE DE MUDAS DE Plinia trunciflora (JABUTICABEIRA) EM FUNÇÃO DE DIFERENTES TRATAMENTOS PRÉ-GERMINATIVOS

FLORESTA ◽  
2010 ◽  
Vol 40 (2) ◽  
Author(s):  
Überson Boaretto Rossa ◽  
Gilmar Paulinho Triches ◽  
Fernando Grossi ◽  
Antonio Carlos Nogueira ◽  
Carlos Bruno Reissmann ◽  
...  
Keyword(s):  
Experimental Design ◽  
Seed Germination ◽  
Quality Index ◽  
Seedling Quality ◽  
Morphological Parameters ◽  
Genetic Potential ◽  
Sexual Propagation ◽  
Seed Sowing

A formação de mudas florestais de boa qualidade morfofisiológica envolve os processos de germinação de sementes, que por sua vez é dependente de potencialidades genéticas. Algumas ações no tratamento prévio de sementes podem auxiliar na germinação. Este trabalho objetivou avaliar a germinação de sementes e qualidade inicial de mudas de jabuticabeira sob diferentes tratamentos pré-germinativos: T1 – sementes completamente limpas; T2 – sementes oxidadas com o fruto macerado; T3 – sementes com polpa; e T4 – semeadura do fruto com semente. O experimento foi conduzido durante o período de outubro de 2007 a agosto de 2008. O delineamento experimental foi inteiramente casualizado, com quatro repetições. Realizou-se a avaliação da percentagem de germinação aos 40, 60 e 90 dias da semeadura, e o cálculo do índice de velocidade de emergência realizado ao final do período. Aos 306 dias após a semeadura foram avaliados os parâmetros morfológicos das mudas, suas relações e o índice de qualidade de Dickson para mudas. Comprovou-se que as sementes completamente limpas (T1) ou com endocarpo aderido (T3) foram os tratamentos prévios mais eficazes para os processos de germinação e qualidade da muda formada. Palavras-chave: Jabuticaba; frutífera nativa; propagação sexuada; produção de mudas.   Abstract Germination of seeds and seedling quality of Plinia trunciflora under different pre-germinative treatments. The formation of forest seedlings of good morphophysiological quality involves processes of seed germination, which in turn is dependent on genetic potential. Some actions in the pretreatment of seed germination can help. This study aimed to evaluate the germination and initial quality of seedlings under different treatments jabuticaba pre-germinated: T1 - seeds thoroughly cleaned; T2 - seeds oxidized with the fruit macerate; T3 - pulp with seeds, and T4 - the fruit with seed sowing. The experiment was conducted during the period from October 2007 to August 2008. The experimental design was a completely randomized with four treatments in 4 replicates. It was calculated of the percentage of germination at 40, 60 and 90 days, and the analysis of the index emergency speed at the end of the period. At 306 days after sowing they were assessed the morphological parameters of seedlings, their relationships and quality index of Dickson for seedlings. It has been proved that the seeds thoroughly cleaned and cored joined with the previous treatments were the most effective in the process of germination and seedling quality.Keywords: Jabuticaba fruits; native fruit; sexual propagation; production of seedlings.

Systems of Weed Control for Peanuts

Weed Science ◽  
1973 ◽  
Vol 21 (3) ◽  
pp. 176-180 ◽  
Author(s):  
E. W. Hauser ◽  
S. R. Cecil ◽  
C. C. Dowler
Keyword(s):  
Seed Germination ◽  
Weed Control ◽  
Soil Types ◽  
Average Weight ◽  
Clay Loam ◽  
Sandy Clay Loam ◽  
Effective System ◽  
Economical System ◽  
Grade Average

Systems of weed control composed of (a) herbicides only, (b) herbicides plus cultivation, or (c) cultivation only were devised. The most effective systems, involving herbicide sequences plus one “non-dirting” layby cultivation, controlled twelve troublesome species of weeds with acceptable yields of peanuts (Arachis hypogaea L.). On Greenville sandy clay loam, a particularly effective and economical system of weed control consisted of (a) N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine (benefin) used as a preplanting incorporated treatment, then (b) S-propyl dipropylthiocarbamate (vernolate) either incorporated into the soil before planting or injected at planting, and finally, (c) a layby cultivation 5 to 6 weeks after planting. A similarly effective system on Tifton loamy sand involved vernolate injected at planting, 2-sec-butyl-4,6-dinitrophenol (dinoseb) at “cracking”, and 4-(2,4-dichlorophenoxy)butyric acid (2,4-DB) as a postemergence treatment followed by the layby cultivation. The “non-dirting” layby cultivation, averaged over both years and herbicide sequences, significantly increased yields of peanuts on both soil types. None of the systems of weed control caused consistent differences in market grade, average weight per seed, germination, or organoleptic quality of the peanuts.

scholarly journals The Effectiveness of Giving Plant PGPR Rhizosphere Bamboo on Cocoa Seeds Germination at The Nursery Level

2021 ◽  
Vol 10 (1) ◽  
pp. 1-5
Author(s):  
Muhammad Yusril Hardiansyah ◽  
Yunus Musa ◽  
Abdul Mollah Jaya
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Block Design ◽  
Plant Growth Promoting Rhizobacteria ◽  
Special Treatment ◽  
Initial Growth ◽  
Seed Growth ◽  
Plant Growth Promoting ◽  
Growth Promoting

The low productivity of cocoa plantations in Indonesia is partly due to the low quality of seeds, which refers to the impeded growth of cultivated cocoa nurseries. Seed is the initial growth of plants so the importance of giving special treatment to seeds will refer to better seed growth. Provision of Plant Growth Promoting Rhizobacteria (PGPR) microbes can produce indoleacetic acid (IAA) in plants to improve the quality of plant growth. This study aims to determine the effectiveness of the provision of Plant Growth Promoting Rhizobacteria bamboo rhizosphere against cocoa seed germination. The study was carried out in the farmer group garden, Gantarangkeke District, Bantaeng. This study was arranged in the form of a two-factor factorial design (F2F) in a randomized block design (RBD). The use of cocoa seed type as the first factor consisted of GTB (Gantarangkeke Bantaeng) local cocoa seed and MCC 01 cocoa seed and seed immersion treatment at PGPR rhizosphere bamboo concentration as the second factor consisting of 0% (control) concentration, 5%, 10 % and 15%. The results obtained indicate that administration of seeds with bamboo rhizosphere PGPR affects the germination (100.00%), the speed of seed growth (7.14%/etmal), as well as on abnormal seeds (10.00%). So that the provision of bamboo rhizosphere PGPR on cocoa seeds has an effective influence on seed germination and cocoa seedling development.

scholarly journals Cryopreservation of primed tobacco seeds

2018 ◽  
Vol 40 (4) ◽  
pp. 415-421
Author(s):  
Camila Aparecida Lopes ◽  
Maria Laene Moreira de Carvalho ◽  
Ana Cristina de Souza ◽  
João Almir Oliveira ◽  
Dayliane Bernardes de Andrade
Keyword(s):  
Seed Germination ◽  
Ambient Temperature ◽  
Silica Gel ◽  
Saline Solution ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
Water Bath ◽  
Tobacco Seeds ◽  
Physiological Quality

Abstract: Priming is a commercial technique used to increase the speed and uniformity of seed germination. However, the physiological quality of primed seeds is usually negatively affected during storage. Tobacco seeds of the cultivar BAT 2101 were used to investigate whether primed seeds could be cryopreserved. The most suitable substances, type of drying, and reheating during priming and cryopreservation of tobacco seeds were studied. Seed priming was performed with water, spermidine, and potassium nitrate, and drying was carried out with silica gel and a saturated saline solution. Seeds were cryopreserved in liquid nitrogen for 24 h and reheated in a water bath for two and five minutes and at ambient temperature. Tobacco seeds primed with spermidine and water can be cryopreserved without loss of physiological quality when quickly dried on silica gel and reheated in a water bath for two minutes.

scholarly journals Seed Germination and Grain Quality of Rice as Affected by False Smut Disease

2019 ◽  
Vol 22 (1) ◽  
pp. 1-7
Author(s):  
B Nessa ◽  
SS Dipti ◽  
MU Salam ◽  
AHMM Haque ◽  
JK Biswas ◽  
...  
Keyword(s):  
Seed Germination ◽  
Grain Quality ◽  
Yield Loss ◽  
Seed Quality ◽  
Rice Yield ◽  
Amylose Content ◽  
Future Research ◽  
Head Rice ◽  
False Smut

Rice false smut (RFSm) is a disease of interest globally and in Bangladesh. Its occurrence and spread have drawn attention since 2010 in the country. While many reports are available on the yield loss from the disease, little is known of its effect on grain quality. Besides, there has been no information on how RFSm affects the seed quality with respect to germination. This study attempted evaluation of seed germination and grain quality of rice as affected by false smut disease. Three years’ study provided strong indication of inferior milling outturn and head rice yield in RFSm contaminated seeds. Results further revealed reduced amylose content and increased protein content in the contaminated seeds. Tendency in reduced seed germination, and less cooking time was observed in RFSm contaminated seeds. Future research is suggested to fully understand those causations. Bangladesh Rice j. 2018, 22(1): 1-7

scholarly journals QUALIDADE SANITÁRIA DE SEMENTES DE Caesalpinia ferrea: INCIDÊNCIA DE FUNGOS, CONTROLE E EFEITOS NA QUALIDADE FISIOLÓGICA COM O USO DE EXTRATOS VEGETAIS

FLORESTA ◽  
2014 ◽  
Vol 45 (1) ◽  
pp. 163 ◽  
Author(s):  
José George Ferreira Medeiros ◽  
Aderson Costa Araujo Neto ◽  
Edcarlos Camilo Silva ◽  
Min Fu Nascimento Huang ◽  
Luciana Cordeiro Nascimento
Keyword(s):  
Seed Germination ◽  
Aspergillus Flavus ◽  
Plant Extracts ◽  
Germination Rate ◽  
Antimicrobial Properties ◽  
Momordica Charantia ◽  
Alternative Control ◽  
Penicillium Sp ◽  
Physiological Quality

As sementes são eficientes meios de disseminação e transmissão de patógenos e, frequentemente, introduzem novos focos de infecção em áreas isentas. A utilização de extratos de plantas com propriedades antimicrobianas são alternativas ecológicas e promissoras para substituir a proteção promovida pela aplicação de fungicidas. Assim, objetivou-se avaliar o efeito dos extratos de alamanda (Allamanda blanchetti L.) e melão-de-são-caetano (Momordica charantia L.) sobre a micoflora e a germinação de sementes de Caesalpinia ferrea. Para tanto, utilizaram-se lotes de sementes coletados em diferentes municípios paraibanos (Areia, Bananeiras, Conde e Remígio), os quais foram submetidos aos testes de sanidade e de germinação. Os tratamentos fitossanitários consistiram de Testemunha; Fungicida dicarboximida (240 g.100 kg-1) e extratos A. blanchetti e M. charantia nas concentrações de 10, 100, 500 e 1000 ppm. Constataram-se os fungos Aspergillus flavus, A. niger, Cladosporium sp., R. stolonifer, Penicillium sp. e Nigrospora sp. nas sementes de C. ferrea. Os extratos de A. blanchetti e M. charantia nas concentrações de 500 e 1000 ppm reduziram a incidência de fungos. As maiores concentrações (500 e 1000 ppm) de ambos os extratos promoveram o aumento no percentual e na velocidade de germinação (IVG), bem como no comprimento das plântulas de C. ferrea.Palavras-chave: Patologia de sementes; micoflora; controle alternativo; germinação. AbstractSanitary quality of Caesalpinia ferrea seeds: incidence of fungi, control and effects on physiological quality with the use of plant extracts. Seeds are efficient to dissemination and transmission of pathogens and often introduce new foci of infection in exempted areas. The use of plant extracts with antimicrobial properties are promising and environmentally friendly alternatives to replace the protection promoted by the application of fungicides. We aimed to evaluate the effect of extracts of Allamanda blanchetti L. and Momordica charantia L. on the mycoflora and seed germination of Caesalpinia ferrea. We used lots of seeds collected in different cities of Paraiba (Areia, Bananeiras, Conde e Remígio), which were tested for germination and sanity. The phytosanitary treatments consisted of control, dicarboximide fungicide (240 g.100 Kg-1) and extracts of A. blanchetti and M. charantia at concentrations of 10, 100, 500 and 1000 ppm. We identified in the seeds of C. ferrea fungi Aspergillus flavus, A. niger, Cladosporium sp., R. stolonifer, Penicillium sp. and Nigrospora sp. The extracts of A. blanchetti and M. charantia in concentrations of 500 and 1000 ppm reduced the incidence of fungi. The highest concentrations (500 and 1000 ppm) of both extracts increased percentage and germination rate (IVG) and length of seedlings of C. ferrea.Keywords: Pathology seed; mycoflora; alternative control; germination.

Variation in pre-harvest sprouting tolerance and fresh seed germination in mungbean (Vigna radiata L.) genotypes

2017 ◽  
Vol 16 (5) ◽  
pp. 437-445 ◽  
Author(s):  
Amrit Lamichaney ◽  
Pradip Kumar Katiyar ◽  
Vijay Laxmi ◽  
Aditya Pratap
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Vigna Radiata ◽  
Biochemical Marker ◽  
Amylase Activity ◽  
Seed Germinability ◽  
Fresh Seed ◽  
Improvement Programme

AbstractMungbean seeds, despite being protected inside the pod, are susceptible to pre-harvest sprouting (PHS) following rainfall due to lack of fresh seed dormancy (FSD), which deteriorates the quality of the seed/grain produced. Therefore, development of mungbean cultivars with short (10–15 days) period of FSD has become important to curtail losses incurred by PHS. In this study, we investigated variations in PHS, fresh seed germination (FSG) and activity of α-amylase enzyme in diverse mungbean genotypes. There was a wide variation in PHS tolerance and FSG among 163 genotypes examined and 14 genotypes were found to be tolerant (<20%) to PHS. Seed germination in a pod, a measure used to evaluate PHS, varied from 7.14% in germplasm accession Chamu 4 to 82.52% in cultivated variety IPM 2–3. There was a marked increase in α-amylase activity in genotypes showing high FSG and PHS, especially at 48 and 72 h after germination as compared with PHS tolerant genotypes. Therefore, α-amylase can be used as an effective biochemical marker to evaluate a large number of mungbean genotypes for FSD and PHS. Also, the variation in seed germinability as found in this study could be further used for mungbean improvement programme.

Seedborne Pathogenic Fungi that Affect Seedling Quality of Red Angico (Anadenanthera macrocarpa) Trees in Brazil

2002 ◽  
Vol 150 (8-9) ◽  
pp. 451-455 ◽  
Author(s):  
O. D. Dhingra ◽  
C. B. Maia ◽  
D. C. Lustosa ◽  
J. B. Mesquita
Keyword(s):  
Pathogenic Fungi ◽  
Seedling Quality
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