Self-pollination does not affect fruit set or fruit characteristics in almond (Prunus dulcis)

2010 ◽  
Vol 130 (3) ◽  
pp. 367-371 ◽  
Author(s):  
Pedro J. Martínez-García ◽  
Encarnación Ortega ◽  
Federico Dicenta
HortScience ◽  
1992 ◽  
Vol 27 (8) ◽  
pp. 887-889 ◽  
Author(s):  
A. Godini ◽  
L. de Palma ◽  
M. Palasciano

A study to ascertain the highest possible fruit set following self-pollination of eight self-compatible cultivars of almond (Amygdalus communis L. = Prunus dulcis Mill) was carried out in Apulia (southern Italy). Fruits set from daily hand-selling were high, compared to those from unassisted self-pollination. The results support growing most of the self-compatible Apulian almonds in solid blocks, without need for cross-pollination, provided that self-pollination is optimized by insect vectors. The relative capability of the cultivars to set fruits by unassisted self-pollination was independent of the reciprocal stigma/anthers position within the same flower.


HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 470a-470
Author(s):  
D.N. Maynard ◽  
G.W. Elmstrom ◽  
J.K. Brecht ◽  
L. Wessel-Beaver

Bush and short-vined calabazas [Cucurbita moschata (Duchesne) Poir.] derived from crosses of `Bush Butternut' with `La Primera' and `La Segunda' followed by several generations of selection and self pollination, are quite uniform in plant and fruit characteristics. Likewise, selfing and selection of vining cultigens has resulted in uniform vine and fruit characteristics. Hybrids between bush/short-vined and vining lines usually retain the plant habit of the bush/short-vined parent, and produce higher yields of fruit with thicker and better-colored flesh than open-pollinated cultigens. Hybrid bush/short-vined calabazas are earlier, have more concentrated fruit set, and utilize space better than open-pollinated cultigens. Commercial seed of hybrids is likely to be more readily available than seed of open pollinated cultigens.


1999 ◽  
Vol 5 (1-2) ◽  
Author(s):  
T. Szabó ◽  
J. Nyéki ◽  
M. Soltész ◽  
Z. Szabó ◽  
T. Tóth

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.  


Author(s):  
Agung Wahyu Susilo

Self compatibility cross in cocoa is a useful criterion in utilizing germplasm collection. Evaluation of self-compatibility crosses on cocoa clones has been carried out in Kaliwining Experimental Station of ICCRI by treating artificial self-pollination. The observed clones were TSH 858, ICS 60, ICS 13, UIT 1, KW 162, KW 165, KW 163, DR 1, DR 2, DRC 16, DRC 15, KKM 22, Na 32, Na 33 and DR 38. Self-compatibility crosses were identified by percentage of fruit set evaluated during 6 consecutive weeks after pollination. The results showed that the percentage of fruit set were significantly different among clones in the range of 0—46.34%. Three groups of compatibility of cocoa clones were identified i.e. first, self-incompatible clones of DR 1, Na 32, Na 33; second, partially self compatible clones of DR 38, TSH 858, ICS 60, ICS 13, UIT 1, KW 162, KW 165, KKM 22; and third, self-compatible clones of DR 2, DRC 16,DRC 15, KW 163. Clones which perform self-incompatible and partially self-compatible furthermore can be used as female parents in the production of hybrids. Key words: self-compatibility, Theobroma cacao, clones.


2002 ◽  
Vol 71 (3) ◽  
pp. 348-354 ◽  
Author(s):  
Tsuneo Ogata ◽  
Tomoko Hirota ◽  
Shuji Shiozaki ◽  
Shosaku Horiuchi ◽  
Kenji Kawase ◽  
...  

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