Effects of clonal rootstocks on ‘Hass’ avocado yield components, alternate bearing, and nutrition

Mickelbart, Michael V.; Bender, Gary S.; Witney, Guy W.; Adams, Carol A.; Arpaia, Mary Lu

doi:10.1080/14620316.2007.11512259

Cited by 40 publications

(31 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In avocado, P, Ca, and S were higher, and Fe was lower in high-yielding years in all rootstocks studied [18]. N, P, K and Mg contents were affected by crop load, showing lower values following the "on" year in olive [19].…”

Section: −1mentioning

confidence: 95%

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (<i>Piper nigrum</i> L.)

Krishnamurthy¹,

Ankegowda²,

Srinivasan³

et al. 2013

AJPS

View full text Add to dashboard Cite

Alternate bearing habit, a common phenomenon prevalent in some of the fruit trees is observed in black pepper variety Panniyur-1 also. In this study, an attempt was made to investigate the role of carbohydrates, mineral nutrients and plant hormones (IAA and zeatin riboside) in alternate bearing in Panniyur-1 variety. The experiment was conducted for three consecutive years at Murugarajendra estate, Madikeri, Karnataka, India (12.42˚ N, 75.73˚ E). Carbohydrate, mineral nutrient and plant hormone (IAA and zeatin riboside) statuses of the leaves as well as fruiting branches (stem) were compared between good fruiting year (on year) and low fruiting year (off year). Results revealed that concentration of mineral nutrients in leaves was more during on year compared to off year while the reverse was true on the stem. Both stem and leaf metabolite levels at harvest were higher in off year compared to on year suggesting that remobilization of nutrients to the developing berries must have been affected during off year, thus leading to accumulation of more nutrients at harvest in off year compared to on year. Leaf had higher concentration of most of mineral nutrients compared to stem. Spraying of 1% solution of complex fertilizer 19:19:19 (percent N:P:K) three times at an interval of 3 weeks from flower primordial initiation to flowering period enhanced the yield to the extent of around 30% during off year. Auxin to cytokinin ratio was 6.6 and 6.1 in on year and 6.3 and 5.7 in off year at flowering and 3 months after flowering respectively, suggesting that this ratio itself may not play a major role in flowering during on and off years, though the ratio was slightly more during on year. Results of the study indicate that efficient utilization of metabolites and nutrients in on year may render vine weak in the subsequent year coupled with poor remobilization into developing berries, which could make it an off year.

show abstract

Section: −1mentioning

confidence: 95%

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (<i>Piper nigrum</i> L.)

Krishnamurthy¹,

Ankegowda²,

Srinivasan³

et al. 2013

AJPS

View full text Add to dashboard Cite

show abstract

“…This can be interpreted as a trade-off between allocation to fruits or to reserves [35]. Managing alternate-bearing is a challenge for fruit tree growers; potential remedial measures include intensive horticultural interventions, or introduction of rootstocks or new cultivars [26]. Fluctuations in the dry matter allocation to fruits has also been observed on horticultural plants such as cucumber plants or pepper plants [20].…”

Section: Introductionmentioning

confidence: 99%

Oscillations in Functional Structural Plant Growth Models

Mathieu

Letort

Cournède

et al. 2012

Math. Model. Nat. Phenom.

View full text Add to dashboard Cite

Abstract. The dynamic model of plant growth GreenLab describes plant architecture and functional growth at the level of individual organs. Structural development is controlled by formal grammars and empirical equations compute the amount of biomass produced by the plant, and its partitioning among the growing organs, such as leaves, stems and fruits. The number of organs initiated at each time step depends on the trophic state of the plant, which is evaluated by the ratio of biomass available in plant to the demand of all the organs. The control of the plant organogenesis by this variable induces oscillations in the simulated plant behaviour. The mathematical framework of the GreenLab model allows to compute the conditions for the generation of oscillations and the value of the period according to the set of parameters. Two case-studies are presented, corresponding to emergence of oscillations associated to fructification and branching. Similar alternating patterns are commonly reported by botanists. In this article, two examples were selected: alternate patterns of fruits in cucumber plants and alternate appearances of branches in Cecropia trees. The model was calibrated from experimental data collected on these plants. It shows that a simple feedback hypothesis of trophic control on plant structure allows the emergence of cyclic patterns corresponding to the observed ones.

show abstract

“…Com a prática da poda, essas plantas são mantidas a uma altura de 5 a 7 metros objetivando facilitar os tratos culturais empregados na cultura. Mickelbart et al (2007) Nenhum efeito dos porta-enxertos 'Velvick' obtido de semente e dos clonais 'Velvick' e 'Duke 7' foi observado na produção, volume de copa, comprimento médio de radicelas, peso médio e formato do fruto da cultivar Hass (MARQUES; HOFMAN;WEARING, 2003).…”

Section: Desenvolvimento Vegetativo E Produção De Abacateirosunclassified

Desenvolvimento, produção e qualidade de frutos de abacateiro cv. "Hass" sobre dois porta-enxertos nas condições edafoclimáticas da região central do Estado de São Paulo

Moraes¹

View full text Add to dashboard Cite

Growth, fruit yield and quality of 'Hass' avocado budded onto two rootstocks in the central region of São Paulo StateAvocado production in Brazil takes place in orchards established onto Seedling rootstocks, with large heterogeneity among plants regarding tree size, fruit yield and quality and susceptibility to soil pathogens, mainly Phytophthora cinnamomi that causes avocado root rot and is by far the main disease affecting this crop worldwide. While clonally obtained rootstocks are used in other countries to minimize such disadvantages, in Brazil such materials have not been yet evaluated. During 2010 to 2013 a trial was conducted in Fazenda Jaguacy farm, in Bauru county, with the aim to evaluate plant growth, fruit yield and quality of 'Hass' avocados onto two rootstocks, a Seedling type (T1) and the 'Dusa' clonal rootstock (T2). The trial was established after a completely randomized block design, with two treatments, 5 repetitions and 10 trees per plot, with a total of 100 measured trees. Tree size was evaluated by measurements of plant height and diameter, which were utilized to compute canopy volume. Fruit yield was obtained from counting and weighing all the fruits harvested at once from each tree, and also the yield efficiency and alternate bearing index were calculated. Fruit quality was determined from individual measurements of fruit weight, diameter (D) and length (L) on a 200-fruit sample randomly collected from each rootstock. Data was submitted to analysis of variance with a 5% significance level. No significant differences were observed among treatments for canopy volume, mean fruit yield, cumulative yield and fruit number. There were significant differences for yield efficiency, fruit weight, length, diameter and L:D ratio supporting the better performance of 'Dusa' clonal rootstock on 'Hass' scion as compared to the Seedling rootstock.

show abstract

Effects of clonal rootstocks on ‘Hass’ avocado yield components, alternate bearing, and nutrition

Cited by 40 publications

References 7 publications

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (<i>Piper nigrum</i> L.)

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (<i>Piper nigrum</i> L.)

Oscillations in Functional Structural Plant Growth Models

Desenvolvimento, produção e qualidade de frutos de abacateiro cv. "Hass" sobre dois porta-enxertos nas condições edafoclimáticas da região central do Estado de São Paulo

Contact Info

Product

Resources

About

Effects of clonal rootstocks on ‘Hass’ avocado yield components, alternate bearing, and nutrition

Cited by 40 publications

References 7 publications

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (&lt;i&gt;Piper nigrum&lt;/i&gt; L.)

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (&lt;i&gt;Piper nigrum&lt;/i&gt; L.)

Oscillations in Functional Structural Plant Growth Models

Desenvolvimento, produção e qualidade de frutos de abacateiro cv. "Hass" sobre dois porta-enxertos nas condições edafoclimáticas da região central do Estado de São Paulo

Contact Info

Product

Resources

About

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (<i>Piper nigrum</i> L.)

Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (<i>Piper nigrum</i> L.)