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Thursday, April 23, 2020 | History

2 edition of Cytological and genetic studies of sterility in inbred and hybrid maize found in the catalog.

Cytological and genetic studies of sterility in inbred and hybrid maize

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  • 10 Currently reading

Published by Connecticut Agricultural Experiment Station in New Haven .
Written in English

    Subjects:
  • Genetics,
  • Corn,
  • Sterility in plants,
  • Cytology,
  • Hybrid corn

  • Edition Notes

    StatementFrances J. Clark
    SeriesBulletin / Connecticut Agricultural Experiment Station -- 465, Bulletin (Connecticut Agricultural Experiment Station) -- 465.
    The Physical Object
    Paginationp. [705]-726 :
    Number of Pages726
    ID Numbers
    Open LibraryOL24663362M
    OCLC/WorldCa10427076

    Hybrid seed production requires use of cytoplasmic male sterility (CMS). Without this system, hybrid seed production would not be economically feasible. There is, therefore, need for developing A and B sor ghum lines, as an essential step for development of hybrid sor ghum industry. A genetic study of male sterility in dif ferent AAuthor: Z. M. Lawan, M. Y. Yeye, M. F. Ishiyaku, S.M. Bugaje, H.O. Ahmed, A.S. Shaibu. Genetic Analysis of Yield Traits in Local and Cimmyt Inbred Line Crosses Using LinexTester Analysis in Maize (Zea mays L.) Author: Parvez Sofi and A.G. Rather Subject: Asian Journal of Plant Sciences Keywords: additive component, SCA, GCA, line x tester, Maize, non-additive component Created Date: 9/4/ AM. Hybrid rice breeding using cytoplasmic male sterility/fertility restoration (CMS/ Rf) systems plays an important role in ensuring global food security. Two backcross inbred line (BIL) populations derived from either Xieqingzao B (XB)//XB/Dongxiang wild rice (DWR) (XXD) or XB//DWR/XB (XDX) were used to detect quantitative trait loci (QTLs) for fertility restoration of Dwarf wild Cited by: 2. Introduction. For the production of F 1 hybrid seeds under open field conditions by using genetic male sterility, the requirements are:; an inbred line which is to be used as male parent. another inbred line which is maintained by crossing together known heterozygous (Ms ms) and male sterile (ms ms) plants i.e. femina line.

    of hybrid wheat Will depend on a stable cytoplasmic—genetic male sterility and fertility restoration system, degree of heterosis involving A x R lines and production of commercial Based on these considerations, the present Investiga- FI seed. tion on genetics of male sterility, fertility restoration and millet and Size: 4MB.


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Cytological and genetic studies of sterility in inbred and hybrid maize by Frances J. Clark Download PDF EPUB FB2

Title. Cytological and genetic studies of sterility in inbred and hybrid maize / Related Titles. Series: Bulletin (Connecticut Agricultural Experiment Station). Genetic male sterility is a useful trait in plant breeding, especially in angiosperm crops such as corn, onion and carrot.

We found a male sterile sugi (Cryptomeria japonica D. Don) tree in Toyama, Japan. Pollen of sugi is one of the major causes of pollinosis in Japan. We carried out this research in an attempt to make clear the characteristics and inheritance of this male Cited by: Male sterility in plants is often cytoplasmically based and maternally inherited.

Male sterile plants produce no functional pollen, but do produce viable eggs. Cytoplasmic male sterility is used in agriculture to facilitate the production of hybrid seed. Hybrid seed is produced from a cross between two genetically different lines; such seeds usually result in larger, more vigorous : Anthony Jf Griffiths, Jeffrey H Miller, David T Suzuki, Richard C Lewontin, William M Gelbart.

The SPT process, combining the SPT genetic male sterility seed increase system with high‐speed optical seed colour sorting, has been successfully deployed in US maize hybrid seed production operations since (Figure 3).

The SPT process has the potential to dramatically impact hybrid maize seed production as it eliminates a need for Cited by: Cytoplasmic Male Sterility in Maize Cytoplasmic Male Sterility in Maize Laughnan, J R; Gabay-Laughnan, S Plants that fail to produce functional pollen grains are said to be male-sterile.

If the trait conditioning the sterility is not inherited according to Mendelian rules, but is instead maternally transmitted, it is referred to as cytoplasmic male sterility (CMS).

Development of a novel recessive genetic male sterility system for hybrid seed production in maize and other cross-pollinating crops Article (PDF. Cytological studies on inbred rye. inbred lines from the hybrid under analysis may have a high potentialfor the establishment of new popcorn hybrids.

Increasing interest in cytoplasmic male sterility (CMS) and the search for pollen fertility restorer (Rf) genes in potato have arisen due to a new strategy in breeding of this important crop which is based on the development of heterotic hybrids produced by crossing of inbred diploid lines.

The paper reviews the main results of the studies on the CMS-Rf genetic Cited by: 3. Improvement in the genetic worth of maize (Zea mays L.) hybrids over the years can be a consequence of increased heterosis and/or improved inbred parents. The objectives of this study were to determine the nature of the genetic improvement of maize hybrids over a period of about 40 years using a representative series of hybrids and to determine.

For instance, the male-sterility stability of maize ms mutant was analyzed by crossing with maize inbred lines and observation of the segregation ratio of fertility to sterility in F 2 populations, suggesting that ms is a stable male Author: Xiangyuan Wan, Suowei Wu. The Biodiversity Heritage Library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community.

Cytological and genetic studies of sterility in inbred and hybrid maize / View Metadata. By: Clark, Frances J. (Frances Janes) () Subjects: Corn Cytology Genetics.

This book provides the biographies, and a related summary, of geneticists and breeders of maize who have contributed to the major discoveries in the 20th century. Their relationships to one another, as well as the general developments in maize genetics and breeding growth, are included.

Forage maize digestibility is now a major selection criterion in breeding programs, and in hybrid breeding it is useful to select at the inbred level. This study was conducted to evaluate the possibility of doing preliminary selection at the inbred level for digestibility-related traits in forage maize (Zea mays L.).

Maize hybrids from a. Male sterility system in Rice hybrid seed production Male sterility: a condition in which the pollen grain is unviable or cannot germinate and fertilize normally to set seeds. Male Sterility Systems (genetic and non-genetic): Cytoplasmic genetic male sterility (CMS) Male sterility is controlled by the interaction of a genetic factor (S) present.

INTRODUCTION The objective of this chapter is to briefly discuss contemporary information and possible molecular bases of inheritance and expression of cytoplasmic male sterility (cms) of maize (Zea mays L.). A more general treatment of the subject can be found in Duvick's () classic review.

Substantially new and revealing data have been obtained sinceand Cited by:   Maize has a long history of genetic and genomic tool development and is considered one of the most accessible higher plant systems.

With a fully sequenced genome, a suite of cytogenetic tools, methods for both forward and reverse genetics, and characterized phenotype markers, maize is amenable to studying questions beyond plant biology.

Major Cited by:   Hybrid Seed Production and Male sterility in Maize Presented by Swati LAD Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

If you continue browsing the site, you. maize offers one of the obvious choices for exploitation of CMS for development of hybrid varieties and as such has been subjected to extensive genetic studies to ascertain the types of sterility. Two models have been put forth for the possible origin of CMS cytoplasm in maize (Doebley and Sisco, ).

UC is a genetic male-sterile wheat (Triticum aestivum L.) that was isolated at Davis from the cross of two fertile wheat varieties, D and Ramona The male-sterile plants were typical of genetic and cytoplasmic male-steriles, except that in a low proportion of the florets, the anthers were transformed to pistil-like structures.

1 hybrid male sterility. To address this conceptual void, I examine the genetic architecture of hybrid male sterility between the allopatric sister species Drosophila persimilis and D. pseudoobscura bogotana. First, using a large-scale backcross analysis, I fine-map autosomal QTL from D. persimilis that confer sterility in male hybrids.

This. Maize is a monoecious plant with separate male and female flowers growing on the same plant. Detasseling of the female inbred parent is widely employed by the seed industry to produce hybrid seed [].Although mechanical detasseling is effective in maize hybrid seed production, it is time-consuming and labour-intensive [].In addition, damage to the top leaves during detasseling.

Genetic diversity among 64 CIMMYT and BARI developed maize inbred lines was conducted at the research farm of Plant Breeding Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, Bangladesh during Rabi season The genotypes were grouped into six clusters.

Cluster III comprised the maximum genotypes (18) which Author: Mohammad Quamrul Islam Matin, Md. Golam Rasul, A.

Aminul Islam, M. Khaleque Mian, Nasrin Ak. a fundamental resource for studies in genetics maize can exhibit strikingly different phenotypes when and breeding. While maize inbreds are used extensively assayed in the genetic backgrounds of different maize in hybrid corn production (Anderson and Brown ; inbred lines (Poethig ).

Knowledge of the rela-Cited by: Hybrid sterility is the most common form of postzygotic reproductive isolation in plants. The best-known example is perhaps the hybrid sterility between indica and japonica subspecies of Asian cultivated rice (Oryza sativa L.).

Major progress has been reported recently in rice in identifying and cloning hybrid sterility genes at two loci regulating female and male fertility, by:   CYTOPLASMIC-GENETIC MALE STERILITY This system is the most widely used method in hybrid seed production.

It is commercially used in Maize,Bajra,Jowar, Onion,Sunflower,Cotton&Sugarbeets. It is of two types: Production of single cross hybrid varieties Production of double cross hybrid varieties. maize inbred lines over four decades of hybrid breeding in the Bc Institute revealed by SSR markers.- Genetika, No.

1, In this paper, changes of genetic diversity of the most important maize inbred lines used for hybrid production within the Bc Institute in the s, s, s and s were examined using the SSR : Ivica Buhiniček, Mirko Jukić, Hrvoje Šarčević, Jerko Gunjača, Zdravko Kozić, Antun Vragolović, Ivan.

First hybrid hyacinth; *Camerarius (Germany) – First to demonstrate sex in plants. Suggested crossing as a method to get new types. Worked with mulberry and maize. Systematic plant breeding was established at this point.

Slow progress because workers did not recognize difference between genetic and environmental variation. the gene – cytoplasm combinations in any selected genotype, cytoplasmic genetic male sterility systems are widely exploited in crop plants for hybrid breeding.

Incorporation of male sterility evades the need for emasculation in cross pollinated species, thus encouraging cross breeding producing only hybrid seeds under natural conditions. agronomic studies. Morphological data provided the initial basis for taxonomic studies of maize and have remained a mainstay of maize racial taxonomy to current times (ORTIZ et al., ).

Furthermore, morphological data play an important role in the management of genetic resources that are conserved in ex situ gene banks.

Cytoplasmic male sterility has genic-recessive locus for GMS in wheat. Determining been more extensively studied than GMS for hybrid the chromosomal location of these genes is the first step wheat production. However, there have been proposals in further genetic studies including gene cloning.

The to use GMS for producing hybrid wheat (Driscoll. The main results of most prediction studies carried out on maize and wheat trials at International Maize and Wheat Improvement Center (CIMMYT) show that when the aim is to predict the genetic. on freezing damage to Inbred and hybrid ruaiaa aeed.

Relative tolerance of aeed of a group of inbred lln«3 to freezing tomperature and the effect of genetic constitution of the aeed have been investigated. Yieldo of corn grown from frozen and unfrozen seed were compared.

UNESCO – EOLSS SAMPLE CHAPTERS SOILS, PLANT GROWTH AND CROP PRODUCTION - Vol. I - Plant Breeding and Genetics - M. Arterburn, S. Jones and K. Kidwell ©Encyclopedia of Life Support Systems (EOLSS) 2. History of Plant Breeding The most rudimentary forms of plant breeding likely originated during the transition ofFile Size: KB.

Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.) Girjesh KUMAR, Prashant KUMAR RAI have been utilized for many years in classical genetic studies (5) and more recently to provide starting material for gene isolation and mapping (6,7).

Jan, C. C., and C. Qualset, Genetic male sterility in wheat (Triticum aestivum L.): Reproductive characteristics and possible use in hybrid wheat breeding. Hilgar – Web of Science® Times Cited: 6Cited by: Genetic characterization of CIMMYT inbred maize lines and open pollinated populations using large scale fingerprinting methods Marilyn L.

Warburton, Xia Xianchun, Jose Crossa, Jorge Franco, Albrecht E. Melchinger, Matthias Frisch, Martin Bohn, David HoisingtonaCited by:   Plant architecture attributes, such as plant height, ear height, and internode number, have played an important role in the historical increases in grain yield, lodging resistance, and biomass in maize (Zea mays L.).

Analyzing the genetic basis of variation in plant architecture using high density QTL mapping will be of benefit for the breeding of maize for many by: We have revised the title to “ Map-based cloning, phylogenetic and microsynteny analyses of ZmMs20 gene regulating male fertility in maize”, which is more appropriate.

The test of male-sterility stability of ms20 mutation under different genetic backgrounds is in progress in our by: 4. Seed Quality of Maize Inbred Lines with Different Composition and Genetic Backgrounds Miriam Rukero Munamava, A. Susana Goggi,* and Linda Pollak ABSTRACT is one of the most important factors affecting early per-By introgressing exotic germplasm into elite maize in the USA, formance and productivity of most agricultural by: 1) The sterility of hybrids prevents interspecific gene exchange and is necessary in case the hybrid has odd number of total chromosomes (the hybridized species has odd and even pairs of chromosomes individually), where equal meiotic division would not be possible, and is also necessary to avoid sex determination problems that may arise from.

A total of maize lines ( fixed inbred parental lines and 68 advanced breeding lines) from CIMMYT breeding programs in Kenya and Zimbabwe were used in this study (Additional file 1: Table S1).The germplasm included: (a) drought tolerant inbred and advanced breeding lines developed for sub Saharan Africa (SSA) and used by breeders; (b) other Cited by: hybrid technology for enhancing the productivity of field crops.

Abstract Harnessing hybrid vigor or heterosis is a promising approach to tackle the current challenge of sustaining enhanced yield gains of field crops. In the con-text, cytoplasmic male sterility (CMS) owing to its heri-table nature to manifest non-functional male gametophyteFile Size: KB.

An inbred line is a line of genetically similar individuals that are bred with each other for uniformity.

Two inbred lines will be used to make a "hybrid", and the progeny will be bred with another cross to make a "double hybrid", getting the bene.