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Self -fruitfulness and parthenocarpy...

Kazokas, William C., III,

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Self -fruitfulness and parthenocarpy in southern highbush blueberry (Vaccinium corymbosum L. hybrids) /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Self -fruitfulness and parthenocarpy in southern highbush blueberry (Vaccinium corymbosum L. hybrids) // William C Kazokas III.
Author:	Kazokas, William C., III,
Description:	1 electronic resource (148 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 65-11, Section: B.
Contained By:	Dissertations Abstracts International65-11B.
Subject:	Botany. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3117341
ISBN:	9780496647651

Self -fruitfulness and parthenocarpy in southern highbush blueberry (Vaccinium corymbosum L. hybrids) /
Kazokas, William C., III,

Self -fruitfulness and parthenocarpy in southern highbush blueberry (Vaccinium corymbosum L. hybrids) /William C Kazokas III. - 1 electronic resource (148 pages)

Source: Dissertations Abstracts International, Volume: 65-11, Section: B.

A diverse population of 88 southern highbush blueberry (Vaccinium corymbosum L. hybrids) cultivars and advanced selections were screened and evaluated for self-fruitfulness and parthenocarpy. Greenhouse studies examined the effects of cross-pollination, self-pollination, and absence of pollination on fruiting and berry quality in deciduous and evergreen plants. The heritability and early anatomical manifestations of seedless fruit development in southern highbush blueberry were also examined. The population displayed high variation for self-fruitfulness in the field, ranging from complete failure to set any self-pollinated fruit to almost normal fruit set without hand or bee pollination. In evergreen and deciduous plants, mean seed number in berries from untreated or unpollinated flowers was significantly lower than self-pollinated, open-pollinated, or cross-pollinated flowers, yet mean berry weight was not always affected. Linear regression models suggested a significant relationship between mean berry weight and mean seed number per berry based on measurements of individual berries. However, a large proportion of the variability in berry weight was unexplained on the basis of seed number. Some clones were able to produce normal-sized berries with only one well-developed seed. The retention of older leaves in the greenhouse during flowering appears to enhance self-fruitful characteristics in southern highbush blueberries. Some evergreen clones set every self-pollinated flower and had mean berry weights exceeding 4.0 g. When styles were removed prior to anthesis, a few clones displayed parthenocappy by producing large, completely seedless fruit. Anatomical studies showed that the ability to set and develop fruit in southern highbush blueberry is not dependent on the release of hormones from fertilized ovules, but is essentially independent of fertilization and extended ovule integrity in the ovary. When parthenocarpic parents were crossed, the progeny displayed an improved ability to set and mature berries without pollination compared with control crosses indicating some heritability for the trait. Some southern highbush clones demonstrated consistent parthenocarpic ability under certain conditions and make the breeding of high yielding varieties with reduced need for pollination a very real possibility.

English

ISBN: 9780496647651Subjects--Topical Terms:

516217
Botany.
Subjects--Index Terms:

Highbush blueberry

Self -fruitfulness and parthenocarpy in southern highbush blueberry (Vaccinium corymbosum L. hybrids) /
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520 $a A diverse population of 88 southern highbush blueberry (Vaccinium corymbosum L. hybrids) cultivars and advanced selections were screened and evaluated for self-fruitfulness and parthenocarpy. Greenhouse studies examined the effects of cross-pollination, self-pollination, and absence of pollination on fruiting and berry quality in deciduous and evergreen plants. The heritability and early anatomical manifestations of seedless fruit development in southern highbush blueberry were also examined. The population displayed high variation for self-fruitfulness in the field, ranging from complete failure to set any self-pollinated fruit to almost normal fruit set without hand or bee pollination. In evergreen and deciduous plants, mean seed number in berries from untreated or unpollinated flowers was significantly lower than self-pollinated, open-pollinated, or cross-pollinated flowers, yet mean berry weight was not always affected. Linear regression models suggested a significant relationship between mean berry weight and mean seed number per berry based on measurements of individual berries. However, a large proportion of the variability in berry weight was unexplained on the basis of seed number. Some clones were able to produce normal-sized berries with only one well-developed seed. The retention of older leaves in the greenhouse during flowering appears to enhance self-fruitful characteristics in southern highbush blueberries. Some evergreen clones set every self-pollinated flower and had mean berry weights exceeding 4.0 g. When styles were removed prior to anthesis, a few clones displayed parthenocappy by producing large, completely seedless fruit. Anatomical studies showed that the ability to set and develop fruit in southern highbush blueberry is not dependent on the release of hormones from fertilized ovules, but is essentially independent of fertilization and extended ovule integrity in the ovary. When parthenocarpic parents were crossed, the progeny displayed an improved ability to set and mature berries without pollination compared with control crosses indicating some heritability for the trait. Some southern highbush clones demonstrated consistent parthenocarpic ability under certain conditions and make the breeding of high yielding varieties with reduced need for pollination a very real possibility.
546 $a English
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650 4 $a Botany. $3 516217
650 4 $a Plant propagation. $3 1621657
653 $a Highbush blueberry
653 $a Parthenocarpy
653 $a Seedless
653 $a Self-fruitfulness
653 $a Vaccinium corymbosum
690 $a 0309
690 $a 0479
710 2 $a University of Florida. $e degree granting institution. $3 3759264
720 1 $a Lyrene, P. M. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 65-11B.
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791 $a Ph.D.
792 $a 2003
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3117341