Seeds and Other Factors Affecting Fruit Size in Kiwifruit

Lawes, G.S.; Woolley, D.J.; Lai, R.

doi:10.17660/actahortic.1990.282.33

Cited by 29 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…While the correlation is relatively weak in the treatments with boron, it is positive and differs from the control which is practically null. The results obtained confirm the positive correlation existing between the number of seeds and the kiwifruit fruit weight, as mentioned in previous works (Hopping, 1990;Lawes and Woolley, 1990).…”

Section: Number Of Seedssupporting

confidence: 91%

“…The results obtained confirm the positive correlation between the number of seeds and kiwifruit weight, as mentioned in previous works (Hopping, 1990;Lawes and Woolley, 1990). The higher the number of seeds, the higher the fruit weight will be.…”

Section: Number Of Seedssupporting

confidence: 90%

“…Hayward and determined a correlation (r = 0.816) between the number of seeds and fruit weight. Other authors, as Bellini et al (1989), Hopping (1990), Intoppa and Piazza (1990), Lawes and Woolley (1990), Testolin et al (1991) andvalenzuela andKonig (1991), have also found a high correlation between fruit weight and the number and weight of seeds, demonstrating that the Hayward kiwifruit needs more than 1,000 seeds to reach a weight greater than 100 g.…”

Section: Introductionmentioning

confidence: 87%

See 2 more Smart Citations

Boron dynamics related to fruit growth and seed production in kiwifruit (Actinidia deliciosa, cv. Hayward)

2010

View full text Add to dashboard Cite

C. Sotomayor, P. Norambuena, and R. Ruiz. 2010. Boron dynamics related to fruit growth and seed production in kiwifruit (Actinidia deliciosa, cv. Hayward). Cien. Inv. Agr. 37(1):133-141. The effect of foliar boron treatments on fruit growth and seed development in Actinidia deliciosa, cv. Hayward, was studied. The distal leaves (BH) or flowers (BF) of a shoot were sprayed with 500 mg L -1 boric acid during the flowering period. The mobility of boron from the leaves to the flowers through the phloem was determined by spraying only the leaves. From 0 to 96 h after treatment, leaves and flowers were sampled and total boron was assessed. At harvest time, fruit weight and diameter plus seed weight and number were measured for the different treatments. The weight of fruits growing from shoots with boron-treated leaves were 14.1% higher than the control, while the weight of fruits derived from boron-treated flowers was 17% higher than that of fruits from untreated flowers. Regarding fruit length, significant differences between boron treatments and the control were observed, with an 8.2% and 8.5% increase for BH and BF treatments, respectively. No significant differences were found in fruit diameter. Fruits grown from shoots with boron-treated leaves had 43% more seeds than fruit grown from untreated control shoots, while fruits resulting from boron-treated flowers had 44% more seeds. This demonstrates the positive effect of boron treatment in seed production. No differences were observed in seed weight between treatments. The correlation coefficient between seed number and fruit weight was r 2 = 0.1294 for BF, r 2 = 0.1298 for BH and r 2 =0.0002 for the control. There was no variation in non-treated leaves and flowers with respect to boron concentration for a 96 h time period. On the contrary, in sprayed leaves boron levels reached up to 16 mg kg -1 between 24 and 48 h and slightly decreased after 96 h, demonstrating the boron absorption capacity of leaves. In the flowers from the shoots with boron-treated leaves, there was a significant 14 mg kg -1 increase in boron concentration from 24 to 96 h, showing boron mobility from leaves to flowers.

show abstract

Section: Number Of Seedssupporting

confidence: 91%

Section: Number Of Seedssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 87%

See 1 more Smart Citation

Boron dynamics related to fruit growth and seed production in kiwifruit (Actinidia deliciosa, cv. Hayward)

2010

View full text Add to dashboard Cite

show abstract

“…Regarding to the effect of treatments on fruit weight, the results obtained confirm the positive correlation between the number of seeds and pear fruit weight, as mentioned in previous works (Hopping, 1990 andLawes andWoolley, 1990). The higher the number of seeds, the higher the fruit weight will be ( Table 2 and 3).…”

Section: Flower Boron Concentration Initial Fruit Set and Final Fruisupporting

confidence: 85%

IMPACT OF BORIC ACID SPRAYING DATE WITH DIFFERENT CONCENTRATIONS ON YIELD AND FRUIT QUALITY OF Pyrus communis cv. 'LE-CONTE' PEAR TREES

Shalan

2013

Journal of Plant Production

View full text Add to dashboard Cite

The aim of the study was to examine the response of pear (Pyrus communis, L.) trees to foliar applications of boric acid. The experiment was carried out during 2010-2011 and 2011-2012 seasons in a commercial orchard in El-Khatatba city, Monifia Governorate, Egypt on mature 'Le-Conte' pear trees grafted on Pyrus communis seedlings planted at a space of 5×5 m on a sandy soil under drip irrigation system and modified central leader trained. Annually, foliar sprays with boric acid were applied (i) at 1 st September after harvest or (ii) at white bud stage before bloom. Spray treatments involved application of boric acid at a rate of 50, 100 or 150 ppm. Trees untreated with boric acid served as the control. The results revealed that foliar applications of boric acid after harvest or before full bloom at white bud stage increased boron concentration in flowers, fruit set percentage and fruit yield. Additionally, these applications resulted in higher mean fruit weight, size, length, diameter, firmness, seed number per fruit, soluble solids concentration and titratable acidity than those from the control trees. These findings indicate that pre-bloom and postharvest boric acid sprays are successful in increasing pear tree yielding and in improving fruit set. But, boric acid application at the rate of 150 ppm at 1 st September after harvest was superior in this respect.

show abstract

“…It appears that the relationship between fruit weight and seed number can be quite variable. In 'Hayward', Lawes et al (1990) found, within the same season, a linear, curvilinear, and asymptotic relationship between fruit weight and seed dry weight depending on whether fruit from different single vines were assessed or fruit from many vines were pooled. Results show that shading did not have much of an effect on fruit quality in the current season or the following season.…”

Section: Effect Of Shading On Subsequent Floweringmentioning

confidence: 99%

Influence of time of overhead shading on yield, fruit quality, and subsequent flowering of hardy kiwifruit,Actinidia arguta

Tiyayon

Strik²

2004

New Zealand Journal of Crop and Horticultural Science

View full text Add to dashboard Cite

The effect of overhead shading on yield, fruit quality, and subsequent flowering was studied in 4-year-old Actinidia arguta 'Ananasnaya' vines in Oregon, United States in 1998 and 1999. Experimental vines were shaded to 45% of full sun from 14 July to 14 August, 14 July to 10 September (harvest date), or 10 September to 16 November, 1998. Control vines were not shaded. Shading treatments were not repeated in 1999. Fruit fresh and dry weight development followed a similar growth pattern in all treatments. Shading had no effect on yield per vine or fruit fresh weight, length, diameter, and % soluble solids in 1998. Shading for 2 months before harvest significantly reduced fruit dry weight in 1998. Shading in 1998 did not affect percentage of budbreak or the number of buds, shoots, or fruitful shoots per vine in 1999. However, vines that were shaded had a significantly lower percentage of fruitful shoots than unshaded vines, especially vines shaded for 2 months before harvest in 1998. Vines shaded for 2 months before harvest had 48% fewer flowers and thus less yield than unshaded vines. one more cluster per shoot distally (at node 12) than vines shaded for 1 or 2 months before harvest the previous year. There was no treatment effect on fruit fresh weight, dry weight, length, diameter, seed number, or % soluble solids of marketable fruit in 1999. Results show that overhead shading, as might occur with dense canopies, did not have a large impact on fruit quality or yield in the current season, but reduced yield the following season. Overhead shading for 2 months before fruit harvest, led to the greatest reduction in flower number the following season confirming that the period before fruit harvest is an important time for flower bud evocation in this species.

show abstract

Seeds and Other Factors Affecting Fruit Size in Kiwifruit

Cited by 29 publications

References 0 publications

Boron dynamics related to fruit growth and seed production in kiwifruit (Actinidia deliciosa, cv. Hayward)

Boron dynamics related to fruit growth and seed production in kiwifruit (Actinidia deliciosa, cv. Hayward)

IMPACT OF BORIC ACID SPRAYING DATE WITH DIFFERENT CONCENTRATIONS ON YIELD AND FRUIT QUALITY OF Pyrus communis cv. 'LE-CONTE' PEAR TREES

Influence of time of overhead shading on yield, fruit quality, and subsequent flowering of hardy kiwifruit,Actinidia arguta

Contact Info

Product

Resources

About