scholarly journals Corolla size and temporal displacement of flowering times among sympatric diploid and tetraploid highbush blueberry (Vaccinium corymbosum)

Botany ◽  
2017 ◽  
Vol 95 (4) ◽  
pp. 395-404
Author(s):  
Lauren S. Poster ◽  
Steven N. Handel ◽  
Peter E. Smouse
Keyword(s):  
Natural Populations ◽  
Vaccinium Corymbosum ◽  
Dna Flow Cytometry ◽  
Highbush Blueberry ◽  
Sympatric Populations ◽  
Species Definition ◽  
Corolla Size ◽  
Definition Of ◽  
Tetraploid Cytotypes ◽  
Bloom Date

Polyploidy (whole-genome duplication) is common in vascular plants, but the modes of establishment and persistence, as well as the ecological consequences, of polyploidy remain vague. Highbush blueberry (Vaccinium corymbosum L.) is an ecologically and economically important understory shrub with an unclear species definition, coexisting in sympatric populations of diploid and tetraploid cytotypes. This study analyzes differences in bloom time between sympatric diploid and tetraploid V. corymbosum in natural populations, testing the potential for these cytotypes to interbreed and contributing to the formation and continuity of ploidy-level diversification within this species. Ploidal level was confirmed through DNA flow cytometry of sympatric plants from two populations in New Jersey, USA. Flower bloom date and corolla size were recorded over a 3-year period. Diploid corollas were 32% smaller than tetraploid corollas, making them easily identifiable in the field. Ploidy accounted for 55%–69% of the variation in bloom date, with diploids flowering about 1 week before tetraploids, and the remaining variation distributed among plants, among branches, and within branches. Notwithstanding these differences, there was modest overlap in flowering time between cytotypes, suggesting that cross-pollination is possible. This contributes evidence to the most current species definition of V. corymbosum as a single (mixed ploidy) species.

Reproductive incompatibility barriers in crosses between Vaccinium corymbosum and V. elliottii

1985 ◽  
Vol 63 (11) ◽  
pp. 1987-1996 ◽  
Author(s):  
C. E. Munoz ◽  
P. M. Lyrene
Keyword(s):  
United States ◽  
Cell Division ◽  
Pollen Tube ◽  
Resting State ◽  
Southeastern United States ◽  
Female Parent ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Embryo Abortion ◽  
Reproductive Incompatibility

A study was made of barriers to hybridization between tetraploid V. corymbosum L., the cultivated highbush blueberry, and V. elliottii Chapm., a wild diploid blueberry which may be useful in breeding cultivars adapted to the southeastern United States. Both prefertilization and postfertilization barriers were detected. Prefertilization barriers were mainly observed when V. elliottii was the male parent and were manifested as an arrest of pollen tube growth at the base of the style. In cases where fertilization did take place, regardless of which species was used as the female, a strong postfertilization barrier usually prevented development of hybrid zygotes. Zygotes remained in a resting state after fertilization and usually aborted before dividing. Meanwhile, the endosperm underwent four to six cycles of cell division before it started to degenerate. A causal relationship between embryo abortion and endosperm malfunction was not clearly established. Endosperm malfunction and embryo abortion were delayed when V. corymbosum was the female parent.

scholarly journals Vitamin C and lutein content of northern highbush blueberry (Vaccinium corymbosum L.) juice processed using freezing and thawing

2019 ◽  
Vol 13 (4) ◽  
pp. 2521-2528
Author(s):  
Rafał Nadulski ◽  
Andrzej Masłowski ◽  
Artur Mazurek ◽  
Paweł Sobczak ◽  
Marek Szmigielski ◽  
...  
Keyword(s):  
Vitamin C ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Freezing And Thawing ◽  
Northern Highbush Blueberry ◽  
Lutein Content

scholarly journals The Effect of Vigor of a Bearing Shoot in ‘Bluecrop’ Highbush Blueberry (Vaccinium corymbosum L.) on Growth Characteristics of Shoots and Fruits

2016 ◽  
Vol 29 (5) ◽  
pp. 598-603
Author(s):  
Yeuseok Kwon ◽  
Sung-Hee Lee ◽  
Hyunman Shin ◽  
Sang-Yeong Nam ◽  
Youngjae Oh ◽  
...  
Keyword(s):  
Vaccinium Corymbosum ◽  
Growth Characteristics ◽  
Highbush Blueberry

scholarly journals Inflorescence Bud Initiation, Development, and Bloom in Two Southern Highbush Blueberry Cultivars

2015 ◽  
Vol 140 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Alisson P. Kovaleski ◽  
Jeffrey G. Williamson ◽  
James W. Olmstead ◽  
Rebecca L. Darnell
Keyword(s):  
Interspecific Hybrids ◽  
Shoot Growth ◽  
Late Summer ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Bud Development ◽  
Late Fall ◽  
Southern Highbush ◽  
Bud Initiation ◽  
The Relationship

Blueberry (Vaccinium spp.) production is increasing worldwide, particularly in subtropical growing regions, but information on timing and extent of inflorescence bud development during summer and fall and effects on bloom the next season are limited. The objectives of this study were to determine time of inflorescence bud initiation, describe internal inflorescence bud development, and determine the relationship between internal inflorescence bud development and bloom period the next spring in two southern highbush blueberry [SHB (Vaccinium corymbosum interspecific hybrids)] cultivars. ‘Emerald’ and ‘Jewel’ SHB buds were collected beginning in late summer until shoot growth cessation in late fall for dissection and identification of organ development. Inflorescence bud frequency and number, vegetative and inflorescence bud length and width throughout development, and bloom were also assessed. Inflorescence bud initiation occurred earlier in ‘Emerald’ compared with ‘Jewel’. Five stages of internal inflorescence bud development were defined throughout fall in both cultivars, ranging from a vegetative meristem to early expansion of the inflorescence bud in late fall. ‘Emerald’ inflorescence buds were larger and bloomed earlier, reflecting the earlier inflorescence bud initiation and development. Although inflorescence bud initiation occurred earlier in ‘Emerald’ compared with ‘Jewel’, the pattern of development was not different. Timing of inflorescence bud initiation influenced timing of bloom with earlier initiation resulting in earlier bloom.

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