Fruit and spur leaf growth and quality as influenced by low irradiance levels in pear

Garriz, Patricia I.; Colavita, G.M.; Alvarez, H.L.

doi:10.1016/s0304-4238(98)00182-4

Cited by 20 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This may be due to plant selection in dense populations, which ultimately causes variations in fruit weight and size at different locations. Similar findings were reported by Garriz et al, who wrote that closer spacing between plants of the same and other species affects the fruit size due to competition for light, nutrition and water [25]. …”

Section: Ahmed Et Alsupporting

confidence: 89%

Characterization of indigenous barberry germplasm in Pakistan: variability in morphological characteristics and nutritional composition

Ahmed

Anjum

Naz

et al. 2013

Fruits

View full text Add to dashboard Cite

-Introduction. Barberry (Berberis aristata DC.), a small fruit, is found growing in the wild in the temperate region of northern Pakistan. Materials and methods. Three different locations of Azad Jammu and Kashmir, i.e., Topa, Banjosa and Neriyan Sharif, were explored; thirty accessions of barberry were identified and characterized on the basis of their growth habit, flowering, fruiting and chemical composition of fruits. Results. The accessions exhibited high diversity in their phenotypical/morphological traits such as growth habit, intensity and time of flowering, fruit setting, ripening time, productivity, and fruit shape and color. The location had a great impact on quantitative parameters. Accessions collected from Neriyan Sharif had significantly greater plant height, higher number of branches per plant, extended flowering duration (days), took more time to maturity (days) and had high fruit setting (%), while those from Topa had large-sized leaves and fruits with greater average fruit weight. The nutritional composition of fruits indicated that the accessions from Topa had higher carbohydrate, ash, total soluble solids and Mn contents, with significantly higher juice pH, and lower acidity; while the accessions from Neriyan Sharif had significantly higher moisture, protein, fat, fiber, K, Ca, Na, Fe, Cu, Pb and Cr contents and were highly acidic. The accessions collected from Banjosa were almost intermediate for the quantitative characteristics studied. Conclusions. The results suggested that not only the genotype but its growing location as well are the main factors that determine the growing habit, productivity and nutritional composition of barberry fruits, and this ultimately provides important information on how to make the best use of them.Pakistan / Berberis aristata / biodiversity / fruits / physicochemical properties / proximate composition / genotype environment interaction Caractérisation du matériel génétique indigène de l'épine-vinette au Pakistan : variabilité des caractéristiques morphologiques et de la composition nutritionnelle.Résumé -Introduction. L'épine-vinette (Berberis aristata DC.), qui produit de petits fruits, se développe à l'état sauvage dans la zone tempérée du nord du Pakistan. Matériel et méthodes. Trois localités différentes (Topa, Banjosa et Neriyan Sharif) de l'Azad Jammu-et-Cachemire ont été explorées ; trente accessions d'épine-vinette ont été identifiées et caractérisées sur la base de leur port, floraison, fructification et composition chimique des fruits. Résultats. Les accessions étudiées ont présenté une forte diversité de caractéristiques phénotypiques et morphologiques (port, intensité et durée de floraison, nouaison, maturation, productivité, forme et couleur du fruit). La localisation a eu une grande incidence sur les paramètres quantitatifs. Les accessions collectées auprès de Neriyan Sharif ont significativement présenté de plus grands plants, un plus grand nombre de branches par plant, une durée de floraison plus longue, un temps de maturation plus l...

show abstract

Section: Ahmed Et Alsupporting

confidence: 89%

Characterization of indigenous barberry germplasm in Pakistan: variability in morphological characteristics and nutritional composition

Ahmed

Anjum

Naz

et al. 2013

Fruits

View full text Add to dashboard Cite

show abstract

“…The content of soluble solids has often been considered to be highly correlated with the radiation level, since higher light exposure leads to an increase in carbohydrate assimilation and partitioning. This was found to be the case in plums,43 kiwifruit44 and some cultivars of French hybrid wine grapes,45 as well as in berries of Red Dutch in our study, but it was not the case in pear fruit46, 47 and the other two currant cultivars investigated in this paper. The biosynthetic pathways of these components during fruit development need to be investigated in individual currant cultivars for a thorough understanding of the impact of different growth conditions.…”

Section: Resultscontrasting

confidence: 48%

Effects of latitude and weather conditions on sugars, fruit acids and ascorbic acid in currant (Ribes sp.) cultivars

2009

View full text Add to dashboard Cite

show abstract

“…A recent, 10-year performance evaluation of Pacific Northwest (PNW) pear cultivars on promising, semidwarfing rootstocks from international programs did not produce new candidates for the United States (Einhorn et al, 2013). Considerable research effort is ongoing to understand and develop dwarfing in the pear germplasm (Elkins et al, 2012); in the interim, new acreage will continue to be established at low to moderate tree densities because few options exist to reduce inter-and intracanopy shading previously shown to limit fruit growth and productivity of pear Garriz et al, 1998;Kappel and Neilsen, 1994). Although these plantings may cost less in the short term, they limit early returns and opportunities to improve harvest efficiencies in the future (i.e., low-density plantings require time to develop large, complex canopies to maximize space efficiency, which, in turn, are dependent on tall ladders for harvest).…”

mentioning

confidence: 99%

‘D’Anjou’ Pear Shoot Growth and Return Bloom, but Not Fruit Size, Are Reduced by Prohexadione-Calcium

Einhorn¹,

Pasa²,

Turner³

2014

horts

View full text Add to dashboard Cite

Prohexadione-calcium (P-Ca) was applied to ‘Anjou’ pear (Pyrus communis L.) trees in the lower and upper Hood River Valley (HRV), Oregon, to determine its effectiveness for managing the excessive vigor of ‘Anjou’ under different growing climates. Vegetative growth and development (weekly shoot growth rate, total annual extension growth, number of initiated shoots, internodal length, and number of nodes), yield (fruit number and fruit size), and return bloom dynamics were evaluated between 2010 and 2013. P-Ca consistently reduced shoot elongation by ≈40% in all years and at both sites when doses of 250 ppm were applied in early spring (i.e., ≈5 cm of annual shoot extension) compared with untreated trees. Shorter shoots were the result of both reduced internodal growth and fewer nodes. In the cooler, upper HRV, a single P-Ca application controlled shoot elongation for the entire season, but in the warmer, lower HRV, a second flush of growth was generally observed ≈60 days after the first application. A subsequent P-Ca application (250 ppm) provided added growth control in some instances. Yield was unaffected by P-Ca the season of application; however, in one year, an increase in fruit number indirectly led to reduced fruit size; otherwise, fruit size was unaffected by P-Ca. Postharvest fruit quality was not influenced substantially by P-Ca. Return bloom, however, was consistently reduced by P-Ca. Return yield, the year after P-Ca application (recorded in 2013 only), was reduced in proportion to the decrease in return bloom relative to untreated trees. In 2012, ethephon was also evaluated, alone or in combination with P-Ca. When applied on its own either once (150 ppm, 5-cm growth), or twice [150 ppm, 5-cm growth; 300 ppm, 57 days after full bloom (DAFB)], ethephon did not affect vegetative growth or yield components but did improve return bloom and return yield relative to other treatments; however, when combined with P-Ca, ethephon did not reverse reductions in return bloom or return yield induced by P-Ca. The most effective ethephon treatment for promoting flowering and return yield (300 ppm, 57 DAFB) was not tested in combination with P-Ca. We conclude that P-Ca is an effective tool for controlling vigor of ‘Anjou’ trees, but the decrease in return bloom requires additional investigation. Further work testing combinations of ethephon and P-Ca are warranted to optimize growth and productivity of ‘Anjou’ trees.

show abstract

Fruit and spur leaf growth and quality as influenced by low irradiance levels in pear

Cited by 20 publications

References 26 publications

Characterization of indigenous barberry germplasm in Pakistan: variability in morphological characteristics and nutritional composition

Characterization of indigenous barberry germplasm in Pakistan: variability in morphological characteristics and nutritional composition

Effects of latitude and weather conditions on sugars, fruit acids and ascorbic acid in currant (Ribes sp.) cultivars

‘D’Anjou’ Pear Shoot Growth and Return Bloom, but Not Fruit Size, Are Reduced by Prohexadione-Calcium

Contact Info

Product

Resources

About