scholarly journals Effect of Seed Rate and Row Spacings on the Physio-Chemical Traits of Soybean

2022 ◽  
Vol 34 (4) ◽  
Author(s):  
Rasool Bux Kalhoro ◽  
Ghulam Mustafa Laghari ◽  
Ghulam Hyder Jamro ◽  
Muhammad Ibrahim Keerio
Keyword(s):  
Seed Rate ◽  
Chemical Traits

The effect of seed rate and growing season on four oat cultivars: II. Culm morphology and panicle conformation

1968 ◽  
Vol 70 (3) ◽  
pp. 405-410 ◽  
Author(s):  
I. T. Jones ◽  
J. D. Hayes
Keyword(s):  
Relative Length ◽  
Field Trials ◽  
Grain Weight ◽  
Seed Rate ◽  
Total Height ◽  
Growing Seasons ◽  
Length Increase ◽  
Total Plant ◽  
Oat Cultivars ◽  
1000 Grain Weight

SUMMARYThe effects of low and high seed rates on height, culm and panicle morphology of four oat cultivars grown in field trials in two growing seasons were investigated. Significant differences were detected between cultivars in the number of extended culm internodes, panicle whorls initiated, total height, length of panicle and individual internodes. Differences in seed rate had no effect on the number of culm internodes, but high seed rate significantly reduced the whorl number in the panicle, total plant height, length of panicle and the three upper internodes. The fourth internode remained unaffected, but the lowermost internode showed a relative length increase at high seed rate. The interaction of cultivar x seed rate was significant for total height, and for the length of the central internodes, but the length of the panicle was similarly affected in all cultivars.Panicle conformation was markedly affected by seed rate; high population density caused a reduction in number of grain-bearing whorls, and reduced the number of spikelets and total grain weight per whorl, and 1000 grain weight particularly in the lowermost whorls. The percentage of husk in the grain was increased slightly at high seed rate. The effect of seed rate on culm and panicle morphology is discussed in relation to the development of stiffer-strawed oats.

scholarly journals Adaptive Management Lessons for Serianthes nelsonii Conservation

Horticulturae ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 43
Author(s):  
Thomas E. Marler ◽  
Cameron Musser ◽  
April N. J. Cascasan ◽  
Gil N. Cruz ◽  
Benjamin E. Deloso
Keyword(s):  
Root Zone ◽  
Adventitious Root Formation ◽  
Endangered Tree ◽  
Rapid Decomposition ◽  
Tree Population ◽  
Sapling Growth ◽  
Air Layers ◽  
Sowing Seed ◽  
Chemical Traits

The literature covering the biology, ecology, horticulture, and conservation of the critically endangered tree Serianthes nelsonii Merr. was reviewed. The roots, stems, and leaves of this charismatic legume tree revealed highly plastic traits and responded positively to horticultural manipulations to improve the quality of container-grown transplants. Pre-sowing seed treatments of seed coat scarification and 1 h of imbibition generated 85% to 90% germination at a temperature optimum of 26 °C. Adventitious root formation on air layers and successful unions on approach grafts were 100%. Seedling and sapling growth was maximum under 25% to 50% sunlight transmission, limited irrigation to ensure adequate root zone aeration, repetitive stem tip pruning to increase root:shoot quotient, and thigmic stress to retain an orthotropic orientation of stems. In situ regeneration on Guam was substantial but recruitment from seedling to sapling was nil. High quality leaf litter chemistry enabled rapid decomposition, and soils beneath the tree exhibited unique chemical traits that increased ecosystem health by creating spatial heterogeneity. The greatest unanswered questions focus on plant mortality. Research is needed to determine the reasons for the mortality of in situ seedlings, mortality within transplantation projects on Guam, and the mortality of 60% of the mature in situ tree population during the 26-year implementation of the national recovery plan. Horticultural researchers are ideally positioned to answer these urgent questions.

Targeted secondary metabolic and physico-chemical traits analysis to assess genetic variability within a germplasm collection of “long storage” tomatoes

2018 ◽  
Vol 244 ◽  
pp. 275-283 ◽  
Author(s):  
Laura Siracusa ◽  
Cristina Patanè ◽  
Valeria Rizzo ◽  
Salvatore Luciano Cosentino ◽  
Giuseppe Ruberto
Keyword(s):  
Genetic Variability ◽  
Germplasm Collection ◽  
Physico Chemical ◽  
Chemical Traits ◽  
Long Storage

Effects of chemical mutagens on the physio-chemical traits of Tomato (Lycopersicon esculentum)

2021 ◽  
Vol 9 (2) ◽  
pp. 62-67
Author(s):  
L Tripathy ◽  
S Srichandan ◽  
SK Dash ◽  
J Bhuyan ◽  
T R Sahoo
Keyword(s):  
Lycopersicon Esculentum ◽  
Chemical Mutagens ◽  
Chemical Traits

scholarly journals High Throughput Screening of Elite Loblolly Pine Families for Chemical and Bioenergy Traits with Near Infrared Spectroscopy

Forests ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 418
Author(s):  
Gifty Acquah ◽  
Brian Via ◽  
Tom Gallagher ◽  
Nedret Billor ◽  
Oladiran Fasina ◽  
...  
Keyword(s):  
High Throughput ◽  
Loblolly Pine ◽  
Environmental Sustainability ◽  
High Throughput Screening ◽  
Near Infrared ◽  
The United States ◽  
P Value ◽  
Cellulose Content ◽  
Forest Sites ◽  
Chemical Traits

Pinus taeda L. (loblolly pine) dominates 13.4 million ha of US southeastern forests and contributes over $30 billion to the economy of the region. The species will also form an important component of the renewable energy portfolio as the United States seeks national and energy security as well as environmental sustainability. This study employed NIR-based chemometric models as a high throughput screening tool to estimate the chemical traits and bioenergy potential of 351 standing loblolly pine trees representing 14 elite genetic families planted on two forest sites. The genotype of loblolly pine families affected the chemical, proximate and energy traits studied. With a range of 36.7% to 42.0%, the largest genetic variation (p-value < 0.0001) was detected in the cellulose content. Furthermore, although family by site interactions were significant for all traits, cellulose was the most stable across the two sites. Considering that cellulose content has strong correlations with other properties, selecting and breeding for cellulose could generate some gains.

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