Notes on the Life History and Habits of a Chalcid, Bruchophagus caraganae (Nik.), (Hymenoptera: Chalcididae), Infesting Seeds of Caragana

1956 ◽  
Vol 88 (11) ◽  
pp. 622-625 ◽  
Author(s):  
A. F. Hedlin
Keyword(s):  
Life History ◽  
Plant Breeding ◽  
Large Percentage ◽  
Forest Nursery ◽  
Improvement Program ◽  
Breeding Work

In 1947, while a caragana breeding improvement program was being carried out on the Forest Nursery Station, Indian Head, Saskatchewan, it was discovered that a large percentage of seed was being destroyed by an insect. This insect, the caragana seed chalcid, which interfered seriously with the plant breeding work, is apparently identical with the Russian Bruchophagus caraganae (Nik.) (Nikol'skaya, 1952).

scholarly journals Зберігання селекційних форм маточних коренеплодів моркви посівної

2013 ◽  
pp. 12-13
Author(s):  
В. В. Хареба ◽  
О. В. Хареба ◽  
О. В. Позняк
Keyword(s):  
Plant Breeding ◽  
Research Institutions ◽  
High Quality ◽  
Northern Forest ◽  
Breeding Work ◽  
Modified Method ◽  
Root Crops ◽  
Carrot Seed ◽  
Quality Stock

Розглянуто модифікований спосіб зберігання ма-точних коренеплодів селекційних форм моркви посів-ної, в основі якого – скорочення втрат коренеплодів під час зимового зберігання та отримання чисто-сортного насіння заданих комбінацій у процесі селек-ційної роботи. Розглянутий модифікований спосіб зберігання маточних коренеплодів моркви посівної безпосередньо у полі перспективний для освоєння в науково-дослідних установах та насінницьких госпо-дарствах у зонах Північного Лісостепу та Полісся України. The modified method of storage of uterine root crops of plant-breeding forms of sowing carrot was considered; in its basis is reduction of root crops’ losses during winter storage and receipting of high-quality stock seed from the set combinations in the process of plant-breeding work. The considered modified method of storage of uterine carrot seed directly in the field is perspective for development in research institutions and seed farms in areas of the Northern Forest and Woodlands of Ukraine.

IV.—Inheritance of Resistance to Two Strains of Blight (Phytophthora infestans de Bary) in Potatoes

1944 ◽  
Vol 61 (1) ◽  
pp. 137-147 ◽  
Author(s):  
William Black
Keyword(s):  
Disease Resistance ◽  
Plant Breeding ◽  
Phytophthora Infestans ◽  
Inheritance Of Resistance ◽  
Breeding Work ◽  
Resistant Species ◽  
Breeding Station ◽  
In The Wild ◽  
Plant Breeding Station

The existence in Mexico of blight-resistant species of potato has been known for many years, but they occur in the wild and are quite unsuitable for agricultural purposes. In order to utilise their resistance to disease it is necessary to combine disease resistance with the cropping qualities of cultivated forms while eliminating the undesirable characters which are prominent in the wild forms. Breeding work with this object in view has been in progress at the Scottish Plant Breeding Station for several years, and results obtained in the course of testing progenies for reaction to blight infection are discussed in the following pages.

scholarly journals Multiflorous forms of soybean with long inflorescence are important source of breeding on increase of the seed productivity

1970 ◽  
Vol 21 ◽  
pp. 229-232
Author(s):  
O. Z. Shcherbyna ◽  
V. G. Mykhailov ◽  
O. O. Tymoshenko
Keyword(s):  
Plant Breeding ◽  
Laboratory Experiments ◽  
First Generation ◽  
Statistical Processing ◽  
Breeding Value ◽  
Seed Productivity ◽  
First Order ◽  
Breeding Work

Aim. The detailed research of plant-breeding value of the synthesized multiflorous forms with long inflorescence. Methods. The field and laboratory experiments for study of quantitative signs of varieties and hybrids with the statistical processing of data. Results. Synthesized multiflorous forms of soybean were characterized by greater duration of period of vegetation (135–150 days) and high of plants (100–160 cm). On the signs of inflorescence multiflorous forms were distinguished from existent varieties by the amount of flowers in inflorescence – from 9.2 to 32.8 (at plant-breeding varieties – 2.6–5.0), long inflorescence – to 18.6 and more cm (at plant-breeding varieties are 0.3 cm to 1.8 cm). These forms were characterized by the greater amount of pods and seed from a plant, by mass of seed from a plant, and also by the greater amount of knots, amount of branches of first-order than plant-breeding varieties and numbers. The hybrids of first generation by the productivity considerably exceeded both paternal forms. Mass of seed from a plant changed from a 32.00 g to 60.61 g. On duration of period of vegetation the hybrids of first generation were inter-mediate between paternal forms. Conclusions. Multiflorous forms of soybean with long inflorescens are important source of breeding work on increase of seed productivity. Keywords: soybean, multiflorous inflorescence, long inflorescence, varieties, hybrids.

scholarly journals Studies in F1 and F2 of crosses between winter and summer turnip rape

1959 ◽  
Vol 31 (1) ◽  
pp. 31-37
Author(s):  
Rolf Manner
Keyword(s):  
Plant Breeding ◽  
Seed Yield ◽  
Seed Weight ◽  
F1 Hybrids ◽  
Turnip Rape ◽  
Breeding Work ◽  
Fodder Production ◽  
Green Fodder ◽  
The Mean ◽  
Seed Yields

In the present study four hybrids between winter and summer turnip rape are compared with each other and with their parents. In all crosses the father was the same summer turnip rape, namely Mette. F1 and F2 of the hybrids were intermediate as regards their development in comparison with the parents. About three-fourths of the F1 plants of the cross Rapido X Mette, one half of F1 of the crosses Gruber X Mette and Sprengel X Mette, and only a small part of the crosses Storrybs X Mette gave seed yields. The seed yield per plant of the F1-hybrids was larger than that of the summer turnip rape Mette. The seed weight per silique and the mean seed weight were considerably higher in F2 of all the hybrids than in the summer turnip rape Mette. The green fodder production of the hybrids can be expected to be large. The hybrids seem to be usable in plant breeding work.

scholarly journals NEW CULTIVARS OF IRIS HYBRIDA HORT. FROM VNIISSOK

2012 ◽  
pp. 41-43
Author(s):  
G. D. Levko ◽  
E. A. Zdolnikova
Keyword(s):  
Plant Breeding ◽  
Seed Production ◽  
Weather Conditions ◽  
Breeding Work ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
New Cultivars

After many years of breeding work in the laboratory of plant breeding and seed production of floral crops of VNIISSOK five varieties of bearded iris (Hybrid) have been developed: St. George, Breeze, Zhirafik, Maestro, Elegy, with the original color of flowers that are resistant to adverse weather conditions (rain, hail, etc. etc.), as well as to diseases and pests, heat and winter resistance.

scholarly journals CHROMOSOMAL ABNORMALITIES SHEEP

2017 ◽  
Vol 53 ◽  
pp. 209-214
Author(s):  
V. V. Dzitsiuk ◽  
H. T. Tipilo
Keyword(s):  
Plant Breeding ◽  
Chromosomal Abnormalities ◽  
Chromosomal Polymorphism ◽  
Economic Losses ◽  
Domestic Sheep ◽  
Chromosomal Anomalies ◽  
Early Stages ◽  
Breeding Work ◽  
Genetic Potential ◽  
Acrocentric Chromosomes

Successful and creative plant-breeding work in a stock-raising is based on the estimation of genetic potential of separate breeds, herds and individuals, that is impossible without thorough genetic- populations knowledge. Knowledge of features of caryotype gives an opportunity objectively to estimate the breeds of animals taking into account their population-cytogenetic features, that assists more complete idea about the evolution of breeds. However such important agricultural object, as a domestic sheep, remains cytogenetic poorly studied, especially in a population-cytogenetic aspect.In literature different breeds have small information about frequency and spectrum of the inherited anomalies and populations of sheep. Most chromosomal and genic anomalies of sheep in general not research, although for practice of plant-breeding work necessary knowledge of reasons of their appearance. Caryotype of sheep is presented by 54 chromosomes, from them 26 pairs of autsom and one pair of sexual chromosomes (ХХ or ХУ). Three pairs of large metacentric and 23 pairs of acrocentric chromosomes of different size enter in the complement of autsom. For sheep as well as for other animals characteristic chromosomal polymorphism as a numerical varying of chromosomes in caryotype (aneuploidi and poliploidi), morphological aberations and associations of separate chromosomes. Chromosomal anomalies of sheep are reason of forming of nonviable gamet, that results in death of embryos on the early stages, and, as a result, to the considerable economic losses in economies. The facts of chromosomal aberation educed for sheep testify to the necessity of cytogenetic control of tribal animals, especially rams, with the aim of exposure of animals-transmitters of undesirable changes in caryotype and exception of them from a plant-breeding process.

scholarly journals Molecular Diversity Analysis of Indigenous Potato Cultivars Using RAPD Markers

2020 ◽  
pp. 43-48
Author(s):  
Farhana Naznin ◽  
Md. Ashraful Haque ◽  
Md. Hasan Sofiur Rahman ◽  
Md. Hasan Atikur Rahman ◽  
Md. Nazmul Hasan Mehedi
Keyword(s):  
Genetic Diversity ◽  
Genetic Distance ◽  
Plant Breeding ◽  
Agricultural Research ◽  
Genotypic Diversity ◽  
Similarity Coefficients ◽  
Improvement Program ◽  
Dna Profile ◽  
Potato Germplasm ◽  
Young Leaves

The study was undertaken to identify genotypic diversity at molecular level of potato for varietal improvement program at the Advanced Plant Breeding Laboratory, Department of Genetics and Plant Breeding, Bongobondhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh. Eight cultivars of potato viz. Lalpakri, Sindurkouta, Indurkani, Ausha, Patnai, Sadaguti, Shilbilati, Challisha were collected from Bangladesh Agricultural Research Institute (BARI), for studying genotyping divergence. Genomic DNA was extracted from young leaves of the cultivars and PCR reaction was performed. The PCR amplified DNA profile was visualized on agarose gel, staining with ethidium bromide. Three RAPD primers named OPA 01, OPA 03 and OPD 18 were used to evaluate the genetic diversity of potato varieties. All the primers were polymorphic and the primers produced the highest number of alleles. The genetic diversity value in Lalpakri with all cultivars except Sadaguti was found to have the highest genetic distance (1.0). The amount of genetic diversity within potato germplasm is quite distinct as revealed by the genetic similarity coefficients. The results indicate that, high level of genetic distance exists among the cultivars. The Primers OPA 01, OPA 03 and OPD 18 showed the highest level of genetic diversity and PIC value while the Lalpakri and Sadaguti cultivars had the highest genetic distance among other cultivars which could be used for further potato breeding program.

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