Perception of English and Catalan vowels by English and Catalan listeners: A study of reciprocal cross-linguistic similarity

2021 ◽  
Vol 149 (4) ◽  
pp. 2671-2685
Author(s):  
Juli Cebrian
Keyword(s):  
Reciprocal Cross

Ultrastructural Changes of the Symbiotic Chlorella-Like Alga Isolated from Hydra Viridis

1982 ◽  
Vol 40 ◽  
pp. 320-321
Author(s):  
K.W. Lee ◽  
R.H. Meints ◽  
D. Kuczmarski ◽  
J.L. Van Etten
Keyword(s):  
Time Course ◽  
Reciprocal Cross ◽  
Ultrastructural Level ◽  
Ultrastructural Changes ◽  
Symbiotic Relationship ◽  
Cell Recognition ◽  
Green Hydra ◽  
Different Strains ◽  
Hydra Viridis

The physiological, biochemical, and ultrastructural aspects of the symbiotic relationship between the Chlorella-like algae and the hydra have been intensively investigated. Reciprocal cross-transfer of the Chlorellalike algae between different strains of green hydra provide a system for the study of cell recognition. However, our attempts to culture the algae free of the host hydra of the Florida strain, Hydra viridis, have been consistently unsuccessful. We were, therefore, prompted to examine the isolated algae at the ultrastructural level on a time course.

Growth and body composition of two breeds of sheep, and their cross, at similar proportions of mature size when given highly digestible or bulky feedsad libitum

1999 ◽  
Vol 1999 ◽  
pp. 106-106
Author(s):  
S. E. Morrow ◽  
G. C. Emmans ◽  
R. M. Lewis ◽  
J. E. Donbavand ◽  
J FitzSimons
Keyword(s):  
Body Composition ◽  
Reciprocal Cross ◽  
Breeding Programmes ◽  
Mature Size

Differences in sheep management and breeding programmes lead to variations in carcass fatness. It is necessary to investigate the relationships between breed, growth and composition on different feeds in order that leaner carcasses may be produced. The purpose of this experiment was to investigate these relationships in two breeds of sheep, and their cross, when fed either a food considered non-limiting to growth or a food that was restrictive by virtue of its bulk.Suffolk (S), Scottish Blackface (B) and reciprocal cross (X) lambs were born over a 4 week period beginning late February. The lambs were weaned at a weight (0.20 estimated mature size) or no later than 8 weeks of age and following an adjustment period, individually penned.

Non-reciprocal cross-incompatibility in Trichogramma deion

1996 ◽  
Vol 80 (3) ◽  
pp. 481-489 ◽  
Author(s):  
Richard Stouthamer ◽  
Robert F. Luck ◽  
John D. Pinto ◽  
Gary R. Platner ◽  
Beth Stephens
Keyword(s):  
Reciprocal Cross

scholarly journals Interspecific Hybridization Processes between Michelia yunnanensis and M. crassipes and Embryogenesis of the Heterozygote

HortScience ◽  
2017 ◽  
Vol 52 (8) ◽  
pp. 1043-1047
Author(s):  
Haiyan Xu ◽  
Folian Li ◽  
Yuezhi Pan ◽  
Xun Gong
Keyword(s):  
Reciprocal Cross ◽  
Embryo Sac ◽  
Pollen Grains ◽  
Blue Staining ◽  
Formation Processes ◽  
Callose Deposition ◽  
Cross Compatibility ◽  
Direct Cross ◽  
Hybrid Seeds ◽  
Aniline Blue Staining

The investigation of hybridization processes and embryogenesis of heterozygote is an effective approach for early hybrids’ identification, which could provide reliable information for successful crossbreeding. In this study, we reported the whole hybridization processes of the direct cross and reciprocal cross between Michelia yunnanensis Franch. ex Finet et Gagnep. and Michelia crassipes Law using fluorescence microscopy after aniline blue staining, with the pollen germination on stigmas, pollen tube growth in styles, and subsequent extension into the embryo sac as well as the double fertilization processes are documented in detail. The M. yunnanensis × M. crassipes combination displayed considerable cross-compatibility, and the heterozygote embryogenesis was further observed with an approach of modified cryosectioning technique. Besides, the whole formation processes of hybrid seeds from artificial pollination to maturation were successfully observed. However, in the reciprocal cross, we found incompatibility between pollen grains of M. yunnanensis and stigmas of M. crassipes for the reason of hysteretic identification, as well as the abnormal callose deposition which belongs to the prefertilization barriers. This is the first study in which the complete and clear hybridization processes in Michelia were reported. We inferred that unilateral incompatibility of M. crassipes detected in this study may also exist in some other Michelia species. In artificial hybridization practices, we suggest some special treatments for overcoming prefertilization barrier should be taken when treating M. crassipes as the maternal parent.

Dispersal of Pissodes strobi in putatively resistant white spruce in Vernon, BC

1996 ◽  
Vol 72 (4) ◽  
pp. 381-387 ◽  
Author(s):  
R. L. McIntosh ◽  
J. A. McLean ◽  
R. I. Alfaro ◽  
G. K. Kiss
Keyword(s):  
Reciprocal Cross ◽  
White Spruce ◽  
White Pine ◽  
Pissodes Strobi ◽  
Host Interactions ◽  
Seasonal Movement ◽  
Key Words Dispersal ◽  
Summer Temperatures ◽  
Resistant Family ◽  
Lateral Branches

White pine weevil Pissodes strobi behaviour was observed in a five-year-old plantation of white spruce in Vernon, British Columbia. Seasonal weevil-host interactions were monitored in four susceptible and four putatively resistant reciprocal cross family pairs in three of five replicates. Classification of susceptibility to weevil attack was based on previous weevil attack history. Performance of eight reciprocal cross pairs was ranked as a function of visitation, oviposition and brood establishment resulting in top-kill. The four putatively resistant family crosses ranked 1 to 4 for resistance to weevil attack, while the four susceptible crosses were ranked 5 to 8 and were consistently attacked. Seasonal and diurnal weevil movement was monitored using mark-recapture techniques. Diurnally, weevils moved within the tree. Feeding occurred at dawn in the leader and upper laterals after which weevils moved down the tree into the forest floor during the high mid-summer temperatures. Later in the season weevils fed in mid-morning on the leader and on the under-sides of lateral branches. A dispersal index was developed to describe seasonal movement. Weevils did not move far throughout the season. Overall dispersal index for both males and females was less than 0.24 m, suggesting that on average, weevils do not move further than the adjacent tree throughout the season after mating and oviposition. Key words: Dispersal, pest management, Pissodes strobi, resistance, silviculture, white spruce

Heterosis and Reciprocal-cross Effects in Tetraploid Switchgrass

Crop Science ◽  
2014 ◽  
Vol 54 (5) ◽  
pp. 2063-2069 ◽  
Author(s):  
Michael D. Casler
Keyword(s):  
Reciprocal Cross

INHERITANCE OF VARIEGATION IN BARLEY

1946 ◽  
Vol 24c (5) ◽  
pp. 145-157 ◽  
Author(s):  
T. J. Arnason ◽  
J. B. Harrington ◽  
H. A. Friesen
Keyword(s):  
Genetic Factor ◽  
Reciprocal Cross ◽  
Gene Content ◽  
High Rate ◽  
Plastid Inheritance

A strain of variegated barley that originated in a Saskatchewan field produces, on selfing, progeny of which approximately 90% are albino, the remainder striped or variegated with rare full green exceptions. In crosses, variegated ♂ × green ♀ produced 7 albino, 4 striped, and 11 green F1 plants. The reciprocal cross yielded 1 striped and 41 green F1 plants. F2 segregation approximated three green to one of all others (albino and variegated). From some F2 and F3 progenies it was inferred that two genetic factor pairs might be segregating. On that hypothesis the dominant hypostatic factor for variegation must be very unstable, mutating at a high rate to white. The peculiarities of inheritance may be explained also, however, on the basis of a combination of gene and (maternal) plastid inheritance. On this interpretation the plastids present in the egg affect the colour of the seedling that develops from it. When green plastids or proplastids are present in the egg, many of them, but not necessarily all, are induced to mutate if the white w gene is homozygous, but fewer if the w gene is heterozygous. If white plastids only are present in the egg it is probable that the seedling will be an albino regardless of gene content.

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