scholarly journals The Transcriptome Landscape of Walnut Interspecies Hybrid (Juglans hindsii × Juglans regia) and Regulation of Cambial Activity in Relation to Grafting

2019 ◽  
Vol 10 ◽  
Author(s):  
Qingguo Ma ◽  
Dechao Bu ◽  
Junpei Zhang ◽  
Yang Wu ◽  
Dong Pei
Keyword(s):  
Juglans Regia ◽  
Cambial Activity ◽  
Juglans Hindsii ◽  
Interspecies Hybrid

scholarly journals Low Correlation Between Genomic and Morphological Introgression Estimates in a Walnut Backcross

1998 ◽  
Vol 123 (2) ◽  
pp. 258-263 ◽  
Author(s):  
Keith Woeste ◽  
Gale McGranahan ◽  
Robert Bernatzky
Keyword(s):  
Fragment Length Polymorphism ◽  
Parental Species ◽  
Juglans Regia ◽  
Linkage Data ◽  
Recurrent Parent ◽  
Morphological Similarity ◽  
Randomly Amplified Polymorphic Dna ◽  
Backcross Population ◽  
Juglans Hindsii ◽  
Genomic Introgression

A first backcross population of walnuts {[Juglans hindsii (Jeps.) Jeps. × Juglans regia L.] × J. regia} was used to evaluate the correlation between morphological (statistical) and genetic distance during introgression. Five traits based on leaf morphology were identified to quantitate the morphology of the parental species, their F1 hybrids, and the backcrosses to each parent. These traits were used to evaluate the morphological similarity of first backcrosses to J. regia using Mahalanobis' distance. The amount of genomic introgression of each backcross was estimated using 59 randomly amplified polymorphic DNA (RAPD) and 41 restriction fragment-length polymorphism (RFLP) genetic markers that identify polymorphisms between J. regia and J. hindsii. A smaller scaffold set of markers was also identified using published linkage data. The correlation between the measures of morphological and genomic introgression for the first backcrosses was low (0.23) but significant. The results suggest that selection based on morphology during backcrossing will not be an effective way to recover recurrent parent genome.

scholarly journals Incidence of Agrobacterium tumefaciens Biovar 1 in and on ‘Paradox’ (Juglans hindsii × Juglans regia) Walnut Seed Collected from Commercial Nurseries

Plant Disease ◽  
2014 ◽  
Vol 98 (6) ◽  
pp. 766-770 ◽  
Author(s):  
L. E. Yakabe ◽  
S. R. Parker ◽  
D. A. Kluepfel
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Crown Gall ◽  
Juglans Regia ◽  
Seed Collection ◽  
Mother Tree ◽  
High Incidence ◽  
Juglans Hindsii ◽  
Soil Fumigants ◽  
Harvest Method

The walnut rootstock ‘Paradox’ (Juglans hindsii × J. regia) is susceptible to Agrobacterium tumefaciens, which often results in a high incidence of crown gall in nursery or walnut production orchards. Though A. tumefaciens is susceptible to the commonly used preplant soil fumigants, crown gall incidence can rise above acceptable levels. We examined the ability of Paradox seed to acquire A. tumefaciens as a function of harvest method used prior to planting. Over a 2-year period at two participating commercial nurseries, Paradox seed were collected directly from the mother tree without contacting the soil or gathered after sitting on the orchard floor for up to 28 days. A. tumefaciens was never detected in or on the 2,650 seeds collected directly from the mother tree. Both virulent and avirulent A. tumefaciens strains were detected in and on the husk of nuts incubated on the orchard floor at a frequency directly proportional to the time spent on the orchard floor. Regardless of A. tumefaciens contamination in or on the husk, A. tumefaciens was never detected in the seed interior. Avoiding soilborne populations of A. tumefaciens at the time of seed collection will play an important role in managing crown gall.

CDKA orthologue isolation and its expression during cambial activity in hybrid walnut (Juglans nigra×Juglans regia)

Trees ◽  
2003 ◽  
Vol 17 (4) ◽  
pp. 316-324 ◽  
Author(s):  
Nadia Goué ◽  
Grégory Montiel ◽  
Isabelle Levert ◽  
Muriel Gaudet ◽  
Christian Jay-Allemand ◽  
...  
Keyword(s):  
Juglans Regia ◽  
Cambial Activity ◽  
Juglans Nigra

Ethylene effects on cambial activity and cell wall formation in hypocotyls of Picea abies seedlings

1991 ◽  
Vol 82 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Barbro S. M. Ingemarsson ◽  
Leif Eklund ◽  
Lennart Eliasson
Keyword(s):  
Cell Wall ◽  
Picea Abies ◽  
Cambial Activity ◽  
Cell Wall Formation ◽  
Wall Formation

Secondary metabolites from the pericarps of Juglans regia

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
E Kavroulaki ◽  
A Karioti ◽  
AR Bilia ◽  
H Skaltsa
Keyword(s):  
Secondary Metabolites ◽  
Juglans Regia

Bactericidal activity of drugs from Juglans Regia to the microflora of livestock premises in organic pig breeding

2020 ◽  
pp. 113-122
Author(s):  
Serhii Zinoviev ◽  
Andrii Kurman ◽  
Dmytro Bindiug ◽  
Pavlo Grubich ◽  
Liubov Lepeta
Keyword(s):  
Bactericidal Activity ◽  
Juglans Regia ◽  
Herbal Remedies ◽  
Potential Efficacy ◽  
Internal Structures ◽  
Bactericidal Properties ◽  
Experimental Base ◽  
Quality Of Products ◽  
Gram Positive Cocci

The introduction of the newest technologies of organic pig breeding has the basic principle of minimizing the use in pigs of chemicals, trace amounts of which in pig production adversely affect the quality of products and the health of consumers. The transition to herbal remedies, the maximum possible rejection of chemical synthesis products, is inhibited, in the main, by the relatively small spectrum of plant compounds with the investigated activity. According to the results of previous studies, six working solutions of Juglans regia L phytosupply extracts - potential phytosine disinfectants were developed: To investigate the bactericidal activity of the experimental preparations of Juglans regia, flushes were made from the internal structures and technological equipment of the housing of the pig stock of the experimental base v. Takhtaulove. Obtained samples of typical banal microflora of the pig complex were mixed to obtain a bacterial-containing suspension averaged over the concentration of microbial bodies and the spectrum of types of microflora in the microbiota. When cultured on nutrient media, with the superficial sowing of a suspension of banal microflora of a pig in the presence of a potential phytodisinfectant, processes of development of individual colonies of the microflora are observed. The amount and intensity of their development, the degree of inhibition of life, assess the level of bactericidal activity of the extracts. The highest bactericidal and fungicidal activity, and consequently, the potential efficacy as a possible disinfectant in the technology of organic pig breeding was revealed by the extracts of phytosupply Juglans regia L No. 2 (extractant - acetic acid to 5 %, nut of wax ripeness) and 4 (extractant, alcohol 20 % nutrient wax ripeness (proven after obtaining the primary extract of up to 5 % alcohol), which have bactericidal properties against gram-positive cocci and gram-negative sticks, but have a weak effect on the spore-forming bacilli. Key words: organic pig breeding, bactericidal activity, phyto-disinfectant, commonplace typical microflora of a pig complex, phyto row materials, walnut extract.

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