Dormancy overcome and seedling quality of pecan in nursery

Poletto, Tales; Muniz, Marlove Fátima Brião; Poletto, Igor; Stefenon, Valdir Marcos; Maciel, Caciara Gonzatto; Rabusque, Jéssica Emilia

doi:10.1590/0103-8478cr20150835

Cited by 10 publications

(8 citation statements)

References 4 publications

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“…In several stone fruits, in addition to physiological dormancy, the endocarp protects the seeds from biotic and abiotic stressors, in field conditions or during fruit/endocarp processing and storage. According to Poletto et al (2016), the endocarp can limit or even prevent germination, bringing about lack of uniformity in the seedling stand, which was also confirmed by Fischer et al (2013) and corroborates our results.…”

Section: Germination Potential Of Seeds With Endocarpssupporting

confidence: 89%

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

et al. 2017

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-The present study evaluated the germination potential of seeds from eight peach tree rootstocks under different stratification methods, aiming at the production of high quality seedlings. In the first experiment, seeds with endocarp from eight genotypes ('Aldrighi', 'Capdeboscq', 'Flordaguard', 'Okinawa', 'Okinawa roxo', 'Tsukuba 1', 'Tsukuba 2', 'Tsukuba 3') were stratified on sand and moist vermiculite, at 7 ºC for 60 days. In the second experiment, endocarpless seeds of the same genotypes were stratified on Petri dishes at 7 ºC. In the third experiment, the time at which at least 75% of the seedlings reached transplanting height (15 cm high) was verified. The endocarp was a limiting factor for seed germination of the eight rootstocks, since the highest germination percentages were 21% and 48.3% for 'Aldrighi' and 'Capdeboscq', respectively. Germination of 'Okinawa' was only 19.2% and 4.2%, in sand and vermiculite, respectively. Seeds stratified without the endocarp, showed 100% germination, except for 'Flordaguard' and 'Tsukuba 2' and 3', with 93% germination. Seed mass presented a positive correlation with the germination speed index and the initial growth of the seedlings. 'Aldrighi' and 'Capdeboscq' presented more vigorous seedlings with greater growth in height, stem diameter, and Dickson quality index.

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Section: Germination Potential Of Seeds With Endocarpssupporting

confidence: 89%

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

et al. 2017

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“…Rootstocks are obtained from seeds. To obtain better germination and seedling development it is recommended a stratification period before sowing, by placing the seeds for 90 days in moist sand, at 4.0ºC (POLETTO et al, 2016). Bare root should be, preferably, transplanted in the plant's dormancy period (winter) and the seedlings in plastic containers can be transplanted at any time of the year, provided they are irrigated during water deficiency (WELLS, 2017).…”

Section: Propagationmentioning

confidence: 99%

Pecan cultivation: general aspects

et al. 2018

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Given the increasing investment in the pecan production in southern Brazil, it becomes necessary researches, assisting in solve problems and proposition of technical and methodology to enhance this production chain. Thus, the present review aimed to survey the existing information about the culture, both on the world and the Brazilian scene. Issues related to botany, climate and soil requirements, alignment and planting density, cultivars, pests and diseases, among other technical aspects of this culture will be addressed. Pecan nut presents nutraceutical properties that are beneficial to human health, which has increased its demand from consumers. However, there are few research results with pecan nut in Brazil and there are many gaps in scientific knowledge about this culture, especially as regards the management of pests and diseases control, irrigation and nutrition, in Brazilian conditions.

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“…For plant propagation in nurseries, dormancy is a barrier in the production of seedlings because it extends the time of germination after sowing and the seeds are also exposed to predators and unfavorable weather conditions. Uneven germination results in seedlings that differ in size and consequently increase the production cost of trees in the nursery (Poletto et al, 2016). Therefore, the main challenge is obtaining a faster germination rate and increasing the uniformity of the seedlings.…”

Section: Dormancymentioning

confidence: 99%

“…Bonner (1976b) stated that germination without prior stratification is greatly enhanced by soaking the seeds in gibberellic acid. Recently, Poletto et al (2016) executed a study to overcome Pecan seed dormancy using different methods.…”

Section: Dormancymentioning

confidence: 99%

Propagation of Pecan (Carya illinoensis): A review

Casales¹,

Watt²,

Coetzer³

2018

Afr. J. Biotechnol.

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The Pecan (Carya illinoensis) is the most important species that belongs to the Carya genus. It is cultivated mainly for its nut, which is rich in oils and proteins, and for its good quality wood. Pecan is conventionally propagated by budding or grafting onto rootstocks obtained by open pollination. However, these techniques are not very efficient due to low propagation rates, poor survival and difficult establishment. Therefore, in vitro propagation of pecan can play a very important role in rapid multiplication of cultivars with desirable traits and production of healthy and disease-free plants in a short time. In the present review, the improvements over the years in the propagation of pecans, the refinements of protocols for obtaining high shoot multiplication and regeneration through organogenesis and/or somatic embryogenesis is discussed. Some basics of genetic transformation and its possible benefits are also discussed.

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Dormancy overcome and seedling quality of pecan in nursery

Abstract: This study evaluated the efficiency of methods to overcome seed dormancy in different storage

Cited by 10 publications

References 4 publications

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

Pecan cultivation: general aspects

Propagation of Pecan (Carya illinoensis): A review

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