scholarly journals Genetic, Phenotypic, and Commercial Characterization of an Almond Collection from Sardinia

Plants ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 86 ◽  
Author(s):  
Emma Rapposelli ◽  
Maria Rigoldi ◽  
Daniela Satta ◽  
Donatella Delpiano ◽  
Sara Secci ◽  
...  

Background: Recent nutritional and medical studies have associated the regular consumption of almonds with a wide range of health benefits. As a consequence, kernel quality has become an important goal for breeding, considering not only the chemical composition conferring a specific organoleptic quality but also physical traits related to industrial processing. Methods: We characterized an almond collection from Sardinia through analysis of 13 morpho-physiological traits and eight essential oil profiles. The genetic structure of the collection was studied by analyzing the polymorphism of 11 simple sequence repeats (SSR). Results: Both commercial and phenotypic traits showed wide ranges of variation. Most genotypes were early flowering with low yield potential. Several genotypes showed moderate to high yield and very interesting oil compositions of kernels. Based on 11 SSR profiles and Bayesian clustering, the Sardinian cultivars were assigned to groups which were differentiated for several agronomic and commercial traits. Conclusions: Several cultivars showed a high kernel oil content and high oleic to linoleic content ratio. Based on morphological traits, we propose that some of the analyzed cultivars could be interesting for industrial applications. Finally, we highlight the importance of characterizing early blooming cultivars for sites which are experiencing a rise in mean temperatures due to the effects of global climate changes.

2015 ◽  
Vol 42 (1) ◽  
pp. 11-17 ◽  
Author(s):  
J.E. Woodward ◽  
T.A. Baughman ◽  
M.R. Baring ◽  
C.E. Simpson

ABSTRACT Cultivar selection is one of the most economically important decisions made by peanut producers. The development of genotypes capable of maintaining yield and quality under a wide range of conditions is important so that profitability can be maximized. Issues such as declining irrigation capacity and diseases limit production in parts of Texas. Efforts of the Texas AgriLife Peanut Breeding Program are to develop breeding lines with improved yield potential, total sound mature kernels (TSMK), and disease resistance. Cultivar trials were conducted in 2009, 2010, and 2011 to evaluate the performance of the cultivar Tamrun OL11. Trials were established in several different production areas under various field conditions and included the commercial standards Flavor Runner 458 and Tamrun OL07. Yields were similar for Flavor Runner 458 and Tamrun OL07 at 4538 and 4534 kg/ha, respectively; whereas, Tamrun OL11 averaged 4845 kg/ha (P  = 0.02). TSMK plus sound splits (SS) for Tamrun OL11 were 1.3% higher than Flavor Runner 458 and 2.4% higher Tamrun OL07. When comparing cultivars in fields with a history of severe Sclerotinia blight (caused by Sclerotinia minor) yield increases of 1240 and 2229 kg/ha were observed for Tamrun OL11 over Tamrun OL07 and Flavor Runner 458, respectively. Results from these studies illustrate the high yield potential and superior TSMK of Tamrun OL11.


EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Barry L. Tillman

FloRunTM ‘331’ peanut variety was developed by the University of Florida, Institute of Food and Agricultural Sciences, North Florida Research and Education Center near Marianna, Florida.  It was released in 2016 because it combines high yield potential with excellent disease tolerance. FloRunTM ‘331’ has a typical runner growth habit with a semi-prominent central stem and medium green foliage.  It has medium runner seed size with high oleic oil chemistry.


Author(s):  
Alan J. Low

SynopsisSitka spruce is the most important species grown in Scottish forests thanks to its high yield potential, site tolerance and wood properties. It is easily raised from seed or cuttings, and can be readily established and tended under a wide range of site conditions using uncomplicated silvicultural techniques. Spaced furrow ploughing and site drainage are normally required for afforestation; and cultivation may also be desirable prior to restocking. Planting at 2500 trees/ha is done in late winter and spring. Weed control may be necessary, particularly to prevent Calluna-induced growth check. On poor sites, repeated fertiliser application prior to canopy closure can be essential to ensure satisfactory growth, and use of nursing mixtures may be worthwhile. Wherever possible, pole stage crops are thinned regularly to enhance stem quality and diameter growth, but on high windthrow hazard sites the onset of windthrow can be delayed by leaving crops unthinned. After an economic rotation of forty-five to sixty years, crops are clear felled and replanted. During establishment, deer control measures are often required to prevent browsing damage. Damage by insects and fungi is seldom serious, provided that bark-feeding insects are controlled by insecticide at time of replanting, and development of fungal butt rot is minimised by urea treatment of fresh stumps.


Genetika ◽  
2017 ◽  
Vol 49 (1) ◽  
pp. 297-311
Author(s):  
Gaffar Al-Hadi ◽  
Rafiqul Islam ◽  
Abdul Karim ◽  
Tofazzal Islam

Soybean is a promising oilseed crop in rice-based cropping systems in South and Southeast Asia. In spite of immense scope of its expansion, the crop is not being popular to the farmers because of poor yield of the existing cultivars. Therefore, this study evaluated eighty-soybean genotypes of diverse growth habits with a view to searching genotype(s) of desirable morpho-physiological characters and high yield potential. Sixteen quantitative plant traits were evaluated to classify the genotypes into different groups using various multivariate methods. A wide range of variation was found in almost all qualitative plant traits. The study reveals that plants tend to become taller as the phenological cycle is longer. Seed yield was the product of the number of pods per plant, pod weight and seeds per pod. The first three components of principal component analysis explained 75% of the total variations of the soybean genotypes. Using Dendrogram from cluster analysis, the genotypes were grouped into six clusters. The maximum number of genotypes was concentrated in cluster 5 followed by clusters 4. The phenology, plant height, the number of pods and seed yield were the important discriminating variables in grouping the genotypes. The number of pods per plant displayed the principal role in explaining the maximum variance in the genotypes. The clustering pattern of the genotypes revealed that the genotypes under cluster 2 and cluster 6 were long statures, late maturing and produced higher seed yield. The genotype G00003 under cluster 2 is the best entry giving the highest seed yield. From cluster 6, the genotype G00209 could be the better choice for much better seed yield. The cluster 3 genotypes were comparatively early maturing and gave reasonable yield. It is concluded that the genotypes under clusters 2 and 6 and 3 can be important resources for developing a high yielding variety and sustainability of growing soybean in the subtropical conditions.


2015 ◽  
Vol 60 (4) ◽  
pp. 395-406
Author(s):  
El Hassan ◽  
Yasir Gamar ◽  
Ibrahim Elzein ◽  
Asma Ali ◽  
Tareg Ahmed

Sorghum (Sorghum bicolor (L) Moench) is the most widely produced and consumed cereal crop in Sudan. However, productivity is low since the crop is produced in favorable and unfavorable environments where the crop suffers from drought stresses at different growth stages. In the present study, six sorghum inbred lines developed by local breeding program and two commercial checks were evaluated for grain yield potential, yield stability, some important agronomic characters and grain quality properties. Series variety trials were conducted at Elobeid and Suki, Damazin areas of Sudan, during three consecutive rainy seasons. The selected locations represent low, medium and high rainfall areas of Sudan. The trial was laid out in a randomized complete block design. The results revealed that mean squares of genotypes, seasons, locations, location x season, location x genotypes, season x genotypes and season x location x genotype interactions were highly significant (P=0.01) for grain yield. The sorghum genotypes Edo 34-23-4, Edo 26-18 and Edo 16-dwarf produced substantially higher grain yields than commercial checks and the trial mean. Their percentage yield increase ranged from 5% to 75% over commercial checks. The stability analysis revealed that the above mentioned Edo-genotypes had high yield potentials and were stable across a wide range of agricultural conditions. Moreover, the same Edo-lines showed early maturing compared to selected commercial checks and also the Edo-lines possessed good food grains and were market preferred and acceptable for making quality kisra (fermented sorghum pancake-like flatbread). The Edo developed lines also possess the acceptable grain quality in addition to moderate physical grain characteristics such as protein content, fat acidity and moisture content.


2018 ◽  
Vol 44 (4) ◽  
pp. 507-514
Author(s):  
MU Kulsum ◽  
MJ Hasan ◽  
MN Haque ◽  
M Shalim Uddin ◽  
KM Iftekharduddaula

Genotype by environment interaction (GEI) is a major complication in plant breeding. Authors used additive main effects and multiplicative interaction (AMMI) to evaluate the effects of GEI in hybrid rice genotype and their adaptation in three years at four locations. Among rice hybrid genotypes ACI93024 was stable in all environments with high yield potential. Using AMMI analysis AMMI 1 biplot showed the genotypes HS-273, Heera-2, ACI-2 and HRM-02 were highly stable with moderate yield potential but the genotype ACI93024 was more adapted to a wide range of environment than the rest of the genotypes, while BRRI dhan28 indices the lowest stability. ACI-2, LP-70 and Mayna were specifically adapted to the environment of Rangpur, Jessore and Gazipur, respectively. Comilla was identified as stable environment for all the genotypes.


2016 ◽  
Vol 78 (6-12) ◽  
Author(s):  
Nor Athirah Zaharudin ◽  
Roslina Rashid ◽  
Siti Marsilawati Mohamed Esivan ◽  
Norasikin Othman ◽  
Ani Idris

Production of structured lipids (SL) or tailor made fats provides an opportunity for cheap oils and fats to be utilized for the synthesis of high added value products. Much attention is being paid to SL due to their potential biological functions, industrial applications, and nutritional perspectives. The paper reviews the potential of waste cooking palm oil (WCPO) as an alternative substrate for the production of structured lipids especially for the production of high oleic palm oil. Utilization of waste cooking oil for biodiesel productions is well explored. However, WCPO utilization properties are still lacking scientific investigation due to limited chemical and physical functionalities. Therefore, enhancement of WCPO into high quality oil offers an alternative to be utilized for wide range of applications, thus reduce the environmental effect causes by its disposal problems. The paper also reviews and discusses the production of structured lipid via enzymatic acidolysis.


Author(s):  
A.G. Gillingham ◽  
J.D. Morton ◽  
M.H. Gray

New targets for increased productivity from the sheep and beef industry are about 4% annually, at a time of ever heightening environmental awareness. A major part of this will occur by applying current technology to increase the productivity from the presently lowerthan- average farms. However leading farmers will also have to increase efficiency or productivity if they are to remain economically viable. One prospect is to examine the natural variability in hill pastures and determine if this can be more appropriately managed to improve economic returns. Hill farms have soil and topographic var iability, which can result in a wide range in pasture production. Yet a uniform rate of fertiliser is usually applied to such land. This results in under prescription of fertiliser for high yield potential zones, and similarly over prescription for low yielding zones. The conversion of easier hill land to dairying has shown how pasture productivity can be improved by applying higher rates of fertiliser and utilising the extra pasture efficiently. This approach could be applied within parts of hill farms. The main fertiliser used on hill farms is superphosphate which supplies phosphorus (P) and sulphur (S) for legume growth. This assumes that there is enough clover present to make it worthwhile. However most hill pastures, especially on steep slopes, are low in clover and as a result most are predominantly nitrogen (N) deficient for a large part of the year. The pasture responses to P and S are therefore limited by low soil N levels and N fertilisers give a better economic return. The application of a high rate of N fertiliser to hill country could more than double pasture production. The technology is almost ready to allow accurate, differential application of fertiliser to hill farms from fixed wing aircraft. This should further improve economic benefits. A differential fertiliser management plan has environmental benefits through improved soil stability and associated water quality from hill catchments. Keywords: differential fertiliser application, hill country, hill country variability


2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Xianbo Jia ◽  
Jichen Chen ◽  
Chenqiang Lin ◽  
Xinjian Lin

Catalases are widely used in many scientific areas. A catalase gene (Kat) fromGeobacillussp. CHB1 encoding a monofunctional catalase was cloned and recombinant expressed inEscherichia coli(E. coli), which was the first time to clone and express this type of catalase ofgenus Geobacillusstrains as far as we know. ThisKatgene was 1,467 bp in length and encoded a catalase with 488 amino acid residuals, which is only 81% similar to the previously studiedBacillussp. catalase in terms of amino acid sequence. Recombinant catalase was highly soluble inE. coliand made up 30% of the totalE. coliprotein. Fermentation broth of the recombinantE. colishowed a high catalase activity level up to 35,831 U/mL which was only lower than recombinantBacillussp. WSHDZ-01 among the reported catalase production strains. The purified recombinant catalase had a specific activity of 40,526 U/mg andKmof 51.1 mM. The optimal reaction temperature of this recombinant enzyme was 60°C to 70°C, and it exhibited high activity over a wide range of reaction temperatures, ranging from 10°C to 90°C. The enzyme retained 94.7% of its residual activity after incubation at 60°C for 1 hour. High yield and excellent thermophilic properties are valuable features for this catalase in industrial applications.


2009 ◽  
Vol 5 (4) ◽  
pp. 532-534 ◽  
Author(s):  
Paolo Galeotti ◽  
Diego Rubolini ◽  
Roberto Sacchi ◽  
Mauro Fasola

The ecological effects of global climate changes include shifts of species' distribution and changes in migration strategies and phenotype. Colour polymorphism, which can be envisaged as a species' evolutionary response to alternating conditions or to a wide range of habitats, may be affected by climate changes as well. The scops owl ( Otus scops ) shows two main colour morphs, dark- and pale-reddish, as well as intermediate morphs. We investigated temporal trends in an index of plumage colour of Italian scops owls from museum collections (1870–2007). We found a significant increase in plumage redness over the last century, which was correlated with an increase in temperature and rainfall of the years before specimen collection. However, the temporal increase in plumage redness persisted after controlling for climatic variables, suggesting that other environmental factors could be involved. Our study indicates that ongoing climate changes might have either shifted the selective balance between colour morphs, or differentially affected migration and movement patterns of colour morphs.


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