Wide Hybridization and Embryo-Rescue for Crop Improvement in Capsicum

Debbarama, C

doi:10.4172/2168-9881.s11-003

Cited by 14 publications

(14 citation statements)

References 9 publications

(10 reference statements)

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“…Despite of low percentage of fruit set, reciprocal combinations 449×448 and 449×46 showed the highest number of seeds per fruit: 75 and 73, respectively. It is known that success in hybridization involves not only the compatibility but also pollen germination, growth of the pollen tube, fertilization, development of embryo and endosperm, and seed maturation (Debbrama et al, 2013). In this regard, in addition to the aforementioned combinations, 46×134 (73), 46×449 (64), 449×134 (63), 46×390 (62), 449×443 (61) also had a good seed number per fruit (Table 3).…”

Section: Resultsmentioning

confidence: 94%

Intraspecific Cross-Compatibility in Ornamental Pepper

Nascimento¹,

Nascimento²,

Rêgo³

et al. 2015

Acta Hortic.

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The production of Capsicum for ornamental purposes in Brazil has increased in recent years. To support the activities of this promising market, it is essential to develop new cultivars by hybridization. The knowledge of cross compatibility is also important in plant evolution research as it provides new genetic combinations and promotes speciation. There are few records of intraspecific compatibility studies in Capsicum. The objective of this work was to evaluate and describe cross compatibilities in accessions of Capsicum annuum. This experiment was carried out in a greenhouse at Universidade Federal da Paraiba (UFPB). Nine lines of Capsicum annuum (UFPB 45, UFV 46, UFPB 132, UFPB 134, UFPB 390, UFPB 392, UFV443, UFV 448, and UFV 449), belonging to the Horticultural Germplasm Bank of UFPB and Universidade Federal de Viçosa (UFV), were chosen for the study based on their broad genetic background and phenotypic diversity. They were crossed according to a full diallel schedule. The manual crosses were made at pre-anthesis stage in emasculated flowers. The percentage of fruit set was estimated as the number of fruits formed divided by the total crosses made and varied from 20 to 100%. The intraspecific compatibility varied both with the direction of the crossings and the parents used in the crossing, showing intraspecific incompatibility exists and depends on the genotypes. Parthenocarpic fruits and fruits with very few seeds were observed. Some fruits showed apocarpy. Some crosses showed anthocyanin in the placenta tissues. The knowledge of the intraspecific compatibility as well as of the direction of crossing is extremely important for success in hybrid breeding programs.

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Section: Resultsmentioning

confidence: 94%

Intraspecific Cross-Compatibility in Ornamental Pepper

Nascimento¹,

Nascimento²,

Rêgo³

et al. 2015

Acta Hortic.

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“…Debbarama [14] and Kharkongar [15] also reported a highly significant positive correlation between the pollen tube growth rate and pod formation percent in case of Capsicum annuum and Solanum lycopersicum, respectively.…”

Section: Pollen Tube Growth Ratementioning

confidence: 95%

“…Studies on correlation showed out that there is a significant correlation between pollen germination and percent pod formation. Debbarama [14] and Kharkongar [15] also reported a highly significant correlation between pollen germination and fruit set in Capsicum annuum and Solanum lycopersicum, respectively. Adhikari [16] reported a non-significant correlation between pollen germination and fruit set in Pisum sativum.…”

Section: Pollen Germinationmentioning

confidence: 98%

Crossability Studies And Genetic Diversity Analysis in Blackgram (Vigna Mungo L. Hepper) Using Molecular Markers

Sp¹,

Vk²,

Vu³

2018

Agrotechnology

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The 35 accessions that were used are given in Table 1. Out of these accessions five were used for crossability studies. They were used for one way crossing and so the total number of selfings and crossings were 15 (Table 2). For each cross at least fifteen flowers were randomly selected from plants. Pollinations were performed during October, 2017. Pollination was done in the morning hours between 4:30-5:00 A.M. immediately after emasculation. After emasculation, the stigmatic surface was checked for

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“…Sexual hybridization is an important tool to plant breeders which enables the transfer of desirable traits from one species to another [41]. The steps of sexual hybridization involve a series of events which include germination of the pollen, pollinating the maternal taxa with pollen from the paternal taxa, growth of the pollen tube, fertilization, embryo and endosperm development and seed maturation [42].…”

Section: Sexual Hybridizationmentioning

confidence: 99%

Plant Hybridization as an Alternative Technique in Plant Breeding Improvement

Mwangangi

Muli

Neondo

2019

AJRCS

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For ages, plant breeders have relied on the genetic variability that results from sexually crossing plants within the same species. However, the variability that exists within species populations is inadequate, hence the need to exploit desirable traits of interest in distantly related or even unrelated plants through hybridization techniques. Hybridization can be categorized into two; sexual and somatic. Sexual hybridization, also referred to as wide or distant hybridization involves combining two genomes from different parental taxa through pollination, either naturally or by induction. Somatic hybridization involves the fusion of somatic cells instead of gametes, which highly depends on the ability to obtain viable protoplasts and eventually differentiate them to whole plants in vitro. The impacts of hybrids can either be positive or negative. Among the positive attributes of hybrids that have been exploited is heterosis, which results either from dominance, over-dominance or epistasis. Negative ones include sterility, arrested growth of the pollen tube and embryo abortion. To overcome these problems, chromosome doubling, the use of hormones such as 2, 4-Dichlorophenoxyacetic acid (2, 4-D) and embryo rescue have been employed to overcome sterility, arrested growth of pollen tubes and embryo abortion respectively. After the development of hybrids, different hybrid identification techniques have been used to test them such as the use of molecular and morphological markers, cytogenetic analysis and fluorescent in situ hybridization. The use of hybridization techniques in plant improvement remains a vital tool to cross species barriers and utilization of important attributes in unrelated crop plants which could not have been achieved through conventional techniques of plant breeding.

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Wide Hybridization and Embryo-Rescue for Crop Improvement in Capsicum

Cited by 14 publications

References 9 publications

Intraspecific Cross-Compatibility in Ornamental Pepper

Intraspecific Cross-Compatibility in Ornamental Pepper

Crossability Studies And Genetic Diversity Analysis in Blackgram (Vigna Mungo L. Hepper) Using Molecular Markers

Plant Hybridization as an Alternative Technique in Plant Breeding Improvement

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