scholarly journals Preliminary evaluation of pollen quality, fertility relations and fruit set of selected sour cherry cultivars in polish conditions

2012 ◽  
Vol 61 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Ewa Szpadzik ◽  
Ewa Jadczuk-Tobjasz ◽  
Barbara Łotocka
Keyword(s):  
Fruit Set ◽  
Sour Cherry ◽  
Preliminary Evaluation ◽  
Open Pollination ◽  
Pollen Quality ◽  
Cross Pollination ◽  
Self Pollination

Preliminary experiments were carried out in spring 2006. The percentage of fruit set of 'Schattenmorelle IR-2', 'Koral', 'Debreceni Bötermö', 'újfefértói Fürtos' and 'Karneol' was higher after open pollination compared with self-pollination. The cultivar Vowi had an inconsiderably higher percentage of fruit set after self-pollination compared with open pollination. The percentage of fruit set in 'Debreceni Bötermö' and 'újfehértói Fürtos' was about 25 % higher after pollination by 'Schattenmorelle IR-2' and 'Koral' compared with the percentage of fruit set after cross - pollination of both cultivars with each other. In general, they did not appear to be good pollinators with each other. The highest quality of pollen was observed for the following cultivars: 'Schattenmorelle IR-2', 'Koral' and Vowi and the lowest result was obtained in 'újfehértói Fürtos'. The highest yield was given by the following cultivars: Vowi, Schattenmorelle IR-2 and Koral.

scholarly journals Effects of self and cross pollination on fruit set and fruit quality of sour cherry cultivars

2010 ◽  
Vol 16 (1) ◽  
Author(s):  
M. Ansari ◽  
G. H. Davarynejad ◽  
J. Tornyai ◽  
J. Nyéki ◽  
Z. Szabó ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Sweet Cherry ◽  
Fruit Set ◽  
Block Design ◽  
Fruit Size ◽  
Sour Cherry ◽  
Soluble Solids ◽  
Open Pollination ◽  
Self Pollination

An experiment conducted using factorial based on randomized completely block design during 2005 and 2006. Flowers of Érdi bőtermő, Érdi jubileum and Cigány meggy before anthesis and in balloon stages were isolated with paper bags from guest pollens and pollinated in appropriate time. The averages of final fruit set showed the advantage of open pollination (14.6% fruit set) in compare with artificial self pollination (13.0% fruit set) and natural self pollination (4.4% fruit set). Siah mashhad sweet cherry cultivar with more than 70% overlap of flowering and 9.8% fruit set in 2005 and 17.9% in 2006 was the best among applied pollinisers for Érdi bôtermô sour cherry cultivar.Also, Siah mashhad sweet cherry with more than 50%overlap of flowering time and 25.8%fruit set was the best polliniser for Cigány megg. Among the pollinisers, Siah mashhad was the best for Érdi jubileum with more than 50% overlap and 15.22% fruit set. Meanwhile, pollens of Siah mashhad caused the increase of fruit size in Cigány meggy cultivar. phenomenon. Pollens of Siah mashhad caused reduction in total soluble solids of Érdi bôtermô fruits, however, it does not have any significant effect on the acid rate of fruits.

scholarly journals Blooming phenology and fertility of sour cherry cultivars selected in Hungary

2002 ◽  
Vol 8 (2) ◽  
Author(s):  
J. Nyéki ◽  
T. Szabó ◽  
Z. Szabó
Keyword(s):  
Fruit Set ◽  
Sour Cherry ◽  
Flowering Phenology ◽  
The Self ◽  
Open Pollination ◽  
Bee Pollination ◽  
Bloom Period ◽  
Self Pollination ◽  
Pollination Methods ◽  
Blooming Phenology

Experiments were conducted during the period between 1972 and 2002 at three sites in Hungary. At Érd 97, Helvetia 10, and Újfehértó, 3 cultivars were studied in variety collections. Observations were made on the blooming phenology (start, main time, end and length of the bloom period), on the blooming dynamics (the rate of the open flowers counted every day), on the receptivity of sexual organs, on the fruit set following self- and open-pollination and on the effect of association of varieties in the orchards (choice, rate and placement of pollinisers). Based on the results the rate of the overlap of the blooming times were calculated and varieties were assigned into five bloom time groups according to their main bloom. Self-fertility conditioned by natural self pollination was studied and good pollinisers were chosen (sweet, sour and duke cherry varieties) for the self-sterile and partially self-fertile varieties. The necessity of bee pollination was proved by different pollination methods: natural self-pollination, artificial self-pollination, open pollination. Summary: Experiments were conducted during the period between 1972 and 2002 at three sites in Hungary. At Érd 97, Helvetia 10, and Újfehértó, 3 cultivars were studied in variety collections. Observations were made on the flowering phenology (start, main time, end and length of the bloom period), on the flowering dynamics (the rate of the open flowers counted every day), on the receptivity of sexual organs, on the fruit set following self- and open-pollination and on the effect of association of varieties in the orchards (choice, rate and placement of pollinisers).

scholarly journals Pengaruh Teknik Penyerbukan Terhadap Pembentukan Buah Naga (Hylocereus polyrizhus) [The Effect of Pollination Technique to Fruit Development of Dragon Fruit (Hylocereus polyrizhus)]

2019 ◽  
Vol 28 (2) ◽  
pp. 183
Author(s):  
Ni Luh Putu Indriyani ◽  
NFN Hardiyanto
Keyword(s):  
Fruit Set ◽  
The Other ◽  
Open Pollination ◽  
Tropical Fruit ◽  
Flower Pollination ◽  
Cross Pollination ◽  
Self Pollination ◽  
Dragon Fruit ◽  
Pollination Control ◽  
Fruit Plants

<p>Bunga tanaman buah naga berukuran besar dan merupakan bunga hermaprodit yang mekar pada malam hari. Penyerbukan silang pada buah naga dapat terjadi dengan bantuan angin, serangga polinator maupun manusia. Penelitian bertujuan untuk mengetahui pengaruh teknik penyerbukan bunga betina terhadap pembuahan buah naga (Hylocereus polyrizhus). Penelitian dilakukan di Kebun Percobaan Aripan, Balai Penelitian Tanaman Tropika pada bulan Agustus sampai September 2014. Perlakuan terdiri atas: (A) penyerbukan secara alami (kontrol), (B) penyerbukan sendiri melalui isolasi bunga dengan kantong kertas minyak, (C) penyerbukan dengan mengisolasi bunga menggunakan kantong kertas minyak saat mekar pada malam hari dibantu dengan memberikan serbuk sari dari bunganya sendiri dan diisolasi kembali, dan (D) penyerbukan bunga yang didahului dengan kastrasi dan isolasi menggunakan kantong kertas minyak serta polinasi pada malam hari dan selanjutnya bunga diisolasi kembali. Setiap perlakuan terdiri atas 37 bunga tanaman buah naga. Analisis data dilakukan menggunakan uji t berpasangan pada taraf 0,05. Hasil penelitian menunjukkan bahwa teknik penyerbukan yang berbeda pada tanaman buah naga menghasilkan kelas buah yang berbeda. Persentase buah dengan kelas super tertinggi diperoleh pada penyerbukan secara alami (kontrol), meskipun persentase jadi buah paling kecil. Implikasi dari hasil penelitian ini adalah bahwa penyerbukan pada buah naga sebaiknya dilakukan secara alami tanpa menggunakan bantuan manusia.</p><p><strong>Keywords</strong></p><p>Buah naga; Penyerbukan; Pembuahan; <em>Self compatible</em></p><p><strong>Abstract</strong></p><p>The flower size of dragon fruit plants is large and a hermaphroditic nocturnal flowers. Cross pollination of the dragon fruit plants occurs because of the wind, pollinator, and humans. The aim of the research was to determine the effect of pollination technique on  fertilization of dragon fruit flowers (Hylocereus polyrizhus). This research was conducted at Aripan Experimental Field, Indonesian Tropical Fruit Research Institute (ITFRI) from August to September 2014. The treatments consisted of: (A) natural open pollination (control), (B) the flowers were isolated with paper bags and allowed to self pollination, (C) the flowers were isolated with paper bag and hand self pollinated when flowers were blooming in the evening. Furthermore all pollinated flowers were isolated with paper bag again (hand self pollination), and (D) the flowers were castrated and emasculated then they were isolated with paper bag. Cross pollination was done with pollen from the other plants. The all pollinated flowers were isolated with paper bag again (hand cross pollination). Each treatment consisted of 37 flowers of dragon fruit plants. Data were analyzed by using paired  t test 0.05. The results showed that different of pollination techniques on dragon fruit plants were produced of different fruit grade. Percentage of superior grade on natural open pollination  higher than the other treatment, even though the open pollination had smallest of percentage of  fruit set. The implication of this research is that the dragon fruit flower pollination may be done naturally without human assistance.</p>

scholarly journals Olive Fertility as Affected by Cross-Pollination and Boron

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
A. Spinardi ◽  
D. Bassi
Keyword(s):  
Pollen Germination ◽  
Fruit Set ◽  
Optimal Level ◽  
Lake Area ◽  
Open Pollination ◽  
Cross Pollination ◽  
Self Pollination ◽  
Self Compatibility ◽  
Source Sink

Self-compatibility of local olive (Olea europaeaL.) accessions and of the cultivars “Frantoio” and “Leccino” was investigated in Garda Lake area, northern Italy. Intercompatibility was determined for “Casaliva,” “Frantoio,” and “Leccino,” as well as the effects of foliar Boron applications (0, 262, 525, or 1050 mg·L−1) applied about one week before anthesis on fruit set, shotberry set, and onin vitropollen germination. Following self-pollination, fruit set was significantly lower and the occurrence of shot berries significantly higher than those obtained by open pollination. No significant effect of controlled cross-pollination over self-pollination on fruit set and shotberry set was detectable. B treatments increased significantly fruit set in “Frantoio” and “Casaliva” but not in “Leccino.” B sprays had no effect on shotberry set, suggesting that these parthenocarpic fruits did not strongly compete for resources allocation and did not take advantage of increased B tissue levels. Foliar B application enhancedin vitropollen germination, and the optimal level was higher for pollen germination than for fruit set. Our results highlight the importance of olive cross pollination for obtaining satisfactory fruit set and the beneficial effect of B treatments immediately prior to anthesis, possibly by affecting positively the fertilisation process and subsequent plant source-sink relations linked to fruitlet retention.

scholarly journals Comparison of varying pollen source on productivity of sour cherry (Prunus cerasus L.) cultivars

2010 ◽  
Vol 16 (1) ◽  
Author(s):  
G. H. Davarynejad ◽  
J. Nyéki ◽  
T. Szabó ◽  
J. Tornyai ◽  
Z. Szabó ◽  
...  
Keyword(s):  
Significant Relationship ◽  
Fruit Set ◽  
Sour Cherry ◽  
Prunus Cerasus ◽  
Cross Pollination ◽  
Self Pollination ◽  
North Part ◽  
Paternal Parent ◽  
Old Trees

Fruit set of five sour cherry cultivars (‘Újfehértói fürtös’, ‘Éva’, ‘Petri’, ‘Pándy 279‘ and ‘Csengôdi’) of eight years-old trees grown in Újfehértó, located in the Eastern north part of Hungary have been studied over two years (2008 & 2009). Following reciprocally cross-pollination, free-pollination, self-pollination (autogamy) artificial self-pollination (geitonogamy) were studied. The results show that both maternal and paternal parent cultivates had significant effects on the percentage fruit set. Significant differences have been found in fruit set among years and among pollination treatments. Fruit set of free-pollinated Pándy 276 cultivar was low and seasonally highly variable. The yield of this cultivar on self-pollinated flowers was nearly 0%, and in this treatment the maximum yields did not reach 10% in any of the examined cultivars. There was no significant relationship in the fruit set of free-pollination and natural self-pollination treatments.

scholarly journals Pollinator Contribution to the Production of Cowpea in the Amazon

HortScience ◽  
1998 ◽  
Vol 33 (7) ◽  
pp. 1157-1159 ◽  
Author(s):  
Carlos G. Vaz ◽  
Domingos de Oliveira ◽  
Orlando S. Ohashi
Keyword(s):  
Experimental Design ◽  
Vigna Unguiculata ◽  
Fruit Set ◽  
Open Pollination ◽  
Cross Pollination ◽  
Self Pollination ◽  
Complementary Role ◽  
Pollinating Insects ◽  
The Mean ◽  
Number Of Seeds

Cowpea, Vigna unguiculata (L.) Walp., is a very important legume in the diet of the population of the Amazon. Although it is autogamous, this species has a cross-pollination rate of ≈10%. Over several years, the mean productivity of cowpea has declined. We suggest that this is linked to a decrease in or an absence of pollinating insects in the fields. The objective of this study is to ascertain the pollinator contribution to cowpea production, as well as to determine the pollination type of the `BR3-Tracuateua' cultivar. In an experimental design, four treatments were compared: no pollination, with flowers in cages to prevent insect visits; open-pollination, with flowers exposed to all visiting insects; self-pollination, with flowers pollinated with their own pollen; and cross-pollination, with emasculated flowers being pollinated manually with pollen from another plant. We observed higher fruit set in the presence of pollinators (83%) than in their absence (77%, caged flowers). However, cross-pollination reduced both the number of seeds per pod and fruit set relative to self-pollination. This result suggests that pollinators have a complementary role in the yield of cowpea, by creating a mixed pollination system where self-pollination dominates.

scholarly journals Pollination Strategies to Improve Fruit Set in Orchards of ‘Manzanilloʼ Olive in a Nontraditional Producing Country, Mexico

2019 ◽  
Vol 29 (3) ◽  
pp. 258-264 ◽  
Author(s):  
Alberto Sánchez-Estrada ◽  
Julián Cuevas
Keyword(s):  
Fruit Set ◽  
Fruit Weight ◽  
Open Pollination ◽  
Positive Effects ◽  
Cross Pollination ◽  
Self Pollination ◽  
Pollination Deficit ◽  
Olive Trees ◽  
Compatible Pollen ◽  
The Right

In countries new to producing ‘Manzanillo’ olive trees (Olea europaea), free cross-pollination is often insufficient to obtain high levels of fruit set. An appropriate pollination design is therefore essential to ensure a timely, abundant, and compatible pollen supply. With a view to determining whether a pollination deficit exists in a nontraditional olive area such as the northern Mexico, pollination experiments were carried out in two consecutive seasons in both a monovarietal and a multivarietal Manzanillo orchard, where Sevillano, Barouni, Picual, Pendolino, Mission, Nevadillo, and Frantoio trees were growing nearby. The pollination treatments were self-, open, and cross-pollination with ‘Barouni’ and ‘Sevillano’ pollen, the latter only in the multivarietal orchard. The results confirmed the full self-incompatible condition of ‘Manzanillo’. Open-pollination did not improve fruit set in the monovarietal orchard, but it did so significantly in the multivarietal plot, where fruit set levels under open-pollination matched those of cross-pollination. Lower pollen adhesion, as well as occasional decreased germination, and reduced and delayed pollen tube growth were observed under self-pollination, highlighting self-incompatibility reactions. The reduction in fertilization rates led to low fruit set under self-pollination. Positive effects of open- and cross-pollination treatments were also noted on fruit weight (despite higher crop loads) and pulp-to-pit ratios. A strategic plantation design, including appropriate pollinizers in the right number and position, is therefore suggested for increasing ‘Manzanillo’ fruit quality and yield in Mexico. Both ‘Barouni’ and ‘Sevillano’ served as efficient pollinizers for ‘Manzanillo’, although we recommend ‘Barouni’ as a more efficient because the bloom periods of them matched that of ‘Manzanillo’

scholarly journals Time of flowering and fertilisation of quince varieties

1999 ◽  
Vol 5 (1-2) ◽  
Author(s):  
T. Szabó ◽  
J. Nyéki ◽  
M. Soltész ◽  
Z. Szabó ◽  
T. Tóth
Keyword(s):  
Fruit Set ◽  
Fruit Size ◽  
Late Flowering ◽  
Cross Pollination ◽  
Self Pollination ◽  
The Individual ◽  
Contradictory Data

Literature dealing with flowering and fertilisation of quince is scarce. Most controversial and scanty are informations on observations of self- and cross-pollination. According to our observations, differences in blooming time are few (2-3) days only, thus flowering of most varieties is synchronous. The varieties observed are grouped as early, intermediate and late flowering ones. Self fertility of the individual varieties, however, was not assessed unequivocally, therefore it is recommended, by safety reasons, to consider quince actually as a whole to be auto-incompatible. Artificial self-pollination (or rather geitonogamy) as well as cross pollination with other varieties increased substantially fruit set if compared with the results of natural self-pollination (autogamy). According to the fruit set of their open pollinated flowers, varieties have been classified according to fertility as low (below 10 %), medium (between 10 and 20 %) and high (more than 20 %). Cross fertility of varieties is highly variable depending on combination and on season. Contradictory data are probably due to the sensitivity of quince to conditions of search. Better fruit set was coincident with higher number of stout seeds per fruit. Well developed seeds are definitely a prerequisite of larger fruit size.  

Breeding System and Tests for Pollen-Limitation in Two Species of Banksia

1990 ◽  
Vol 38 (1) ◽  
pp. 63 ◽  
Author(s):  
RL Goldingay ◽  
RJ Whelan
Keyword(s):  
Breeding System ◽  
Reproductive Output ◽  
Fruit Set ◽  
Pollen Limitation ◽  
Floral Display ◽  
Cross Pollination ◽  
Self Pollination

Three factors that potentially influence fruit set (breeding system, inadequate cross-pollination and variable floral display) were examined for two species of Banksia. Firstly, self-pollination and autogamy treatments failed to produce any fruit in B. spinulosa and produced very few fruit in B. paludosa. This suggests that cross pollen is required to produce the level of fruit set observed in the field. Secondly, when plants were given abundant cross pollen, fruit set was not altered in B. spinulosa but was in B. paludosa. Although the number of follicles per inflorescence was was not different for open- pollinated (control) and manipulated B. paludosa inflorescences, the latter produced twice the proportion of inflorescences with follicles produced by control plants and twice the total number of follicles per plant. Thirdly, larger floral display in open-pollinated B. spinulosa plants was associated with a greater production of fruit. However, larger floral display was not associated with a greater reproductive output in B. paludosa, and we suggest that recurrent pollen-limitation in this species may be responsible for this result.

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