scholarly journals Postharvest shelf life of tomato (Lycopersicon esculentum Mill.) mutanats (nor and rin) and their hybrids

Genetika ◽  
2012 ◽  
Vol 44 (3) ◽  
pp. 449-456
Author(s):  
Dejan Cvikic ◽  
Jasmina Zdravkovic ◽  
Nenad Pavlovic ◽  
Sladjan Adzic ◽  
Mladen Djordjevic

Two tomato lines with normal maturation (NR-1 and NR-2) have been crossed with two mutant lines (NR-10 nor and NR-12 rin) with delayed maturation (shelf life). Determination of mutant genes has been done by ?2 test on 100 fruits from F2 generation. Fruits have been picked 65 days from antesis and kept for 60 days, when six evaluations have been done. Data have been collected every 10 days on parental lines and progeny F1 and F2 generation. Variance testing has been done on the basis of one- and two-factorial analysis and groups compared by contrasts. Fruits have been preserved in controlled conditions (in dark at 5?C). Tomato genotypes with nor or rin gene had desirable traits (delayed ripening, long shelf life and firm fruits) for modern selection, so they should be included in programmes aiming to create commercial F1 hybrids.

1988 ◽  
Vol 252 (3) ◽  
pp. 897-900 ◽  
Author(s):  
F Nagai ◽  
H Homma ◽  
H Tanase ◽  
M Matsui

Gunn rats, which have defects in bilirubin and 4-nitrophenol UDP-glucuronyltransferases (GT), were crossed with LA Wistar rats with a defect in androsterone GT. The F1 hybrids showed normal GT activities towards androsterone, bilirubin and 4-nitrophenol, demonstrating that Gunn and LA (‘low activity’) Wistar rats inherit a homozygous dominant trait for androsterone GT and bilirubin GT respectively. The F2 progeny showed four different combinations of bilirubin and androsterone GT activities: defects in both GT activities, a single defect in bilirubin GT activity, a single defect in androsterone GT activity and two normal GT activities. They were segregated in the approximate ratio of 1:3:3:9, which is compatible with Mendel's Principle of Independent Assortment. These results provide evidence that androsterone GT and bilirubin GT are located on different chromosomes. In the F2 generation, defective bilirubin and 4-nitrophenol GT activities were not segregated, indicating that these two mutant genes are closely linked on the same chromosome.


2019 ◽  
Vol 24 ◽  
pp. 177-182
Author(s):  
S. G. Hablak ◽  
Ya. A. Abdullaeva ◽  
L. O. Ryabovol ◽  
Ya. S. Ryabovol

Aim. Studying the heterosis effect from the point of view of allelic and nonallelic gene interaction in F1 hybrids from crossing the arabidopsis ecotypes Col-0 and La-0. Methods. Hybridological method of crossing mutant lines and analysis of the inheritance of the signs of the root system. Results. When plants of different races Col-0 and La-0 cross in the F2 generation, polymeric interaction of genes occurs. In that case splitting in F2 goes in the ratio 15: 1. At the same time, hybrids of the first generation exhibit heterosis, which is manifested in a more powerful development of a rosette of leaves in comparison with the initial forms. Conclusions. The emergence of heterosis in hybrids of the first generation can be explained on the basis of the allelic and nonallelic gene interaction, which creates a favorable combination of genes during hybridization, causing the best manifestation of an economically valuable trait. Keywords: Arabidopsis thaliana (L.) Heynh., heterosis, gene, mutation, race.


Genetika ◽  
2015 ◽  
Vol 47 (1) ◽  
pp. 349-356 ◽  
Author(s):  
Kalidas Pati ◽  
Das Munshi ◽  
Kanti Behera

The inheritance pattern of gynoecious sex expression in cucumber was studied by utilizing a gynoecious line (GBS-1) and two monoecious lines (Pusa Uday and Punjab Naveen). Crosses were made between gynoecious line (GBS-1) and monoecious lines (Pusa Uday and Punjab Naveen). The F1 and F2 population along with parental lines were evaluated to study the inheritance of this trait. All F1 hybrids showed gynoecious sex in both crosses and in the F2 generation, the observed distribution of plant phenotypes fitted the expected mendelian ratio of 3 (gynocious plant) : 1 (monoecious plant). The segregation of plant sex types suggested monogenic dominant control of gynoecious sex form in cucumber using genotype GBS-1.


2019 ◽  
Vol 60 (4) ◽  
pp. 555-562
Author(s):  
In Seok Um ◽  
Min Ju Lee ◽  
Ju Hee Nam ◽  
Sun Yi Lee ◽  
Do Sun Kim ◽  
...  

2012 ◽  
Vol 200 ◽  
pp. 466-469
Author(s):  
Wen Li Dong ◽  
Xue Gong ◽  
Jing Dong ◽  
Ling Jin ◽  
Yu Xiang Wei

The changing patterns of filbert peroxide value through the determination of different storage temperature conditions,research the dynamics characteristics of oxidative rancidity of filbert. By regression analysis base on the storage time and the logarithm of peroxide value,it concluded the grease oxidation reaction first-order kinetic equation of filbert.Using Arrhenius equation and Q10 model for 5 ~ 35 °C temperature within the shelf life of any temperature prediction model.


2021 ◽  
pp. 34-37
Author(s):  
Р.Х. Беков

Рассмотрены важные аспекты использования геноносителей различных маркерных признаков при создании и селекции гетерозисных гибридов томата для защищенного грунта. Наряду с общими требованиями к родительским компонентам, касающимися продуктивности растений, скороспелости, устойчивости к болезням и т. д., сегодня при селекции на гетерозис для защищенного грунта к исходному материалу предъявляют более высокие требования по наличию хозяйственно полезных признаков. Эти требования касаются типа роста растений, формы, окраски и качества плодов, типа кисти, формы плодоножки и т. д. Представлены характеристики исходного материала для создания гетерозисных гибридов томата, а также даны характеристики полученных гибридов. Исследования, проведенные в отделе селекции ВНИИО (ВНИИ овощеводства – филиал ФГБНУ ФНЦО), показали большую перспективность использования при гетерозисной селекции томата для защищенного грунта геноносителей различных маркерных признаков, особенно признаков, определяющих коричневую окраску эндосперма семян (гены bs и bs-2) и несочлененную плодоножку (ген j-2). Созданные с использованием этих маркерных признаков гибриды и селекционные линии по-своему уникальны и являются приоритетным достижением этого научного учреждения, так как они представляют большой интерес для гетерозисной селекции томата в качестве исходного материала. Целый ряд гибридов F1 включен в Госреестр селекционных достижений, допущенных к использованию (Удача, Голубчик, Клад овощевода, Заур и др.). В связи с развитием фермерского и любительского овощеводства в последние годы определенное внимание было уделено созданию новых мутантных линий с розовыми, малиновыми и темно-коричневыми плодами с высокими вкусовыми качествами (учитывая, что образцы такого типа пользуются повышенным спросом у населения и стоят дороже). При создании новых гетерозисных гибридов были учтены эти признаки родительских форм. Important aspects of the use of gene carriers of various marker traits in the creation and selection of heterotic tomato hybrids for greenhouse industry are considered. Along with the general requirements for the parent components concerning plant productivity, precocity, resistance to diseases, etc., today, when breeding for heterosis for greenhouse industry, higher requirements are imposed on the source material for the presence of economically useful features. These requirements relate to the type of plant growth, shape, colour and quality of fruits, brush type, stem shape, etc. The characteristics of the initial material for creating heterotic tomato hybrids are presented, as well as the characteristics of the resulting hybrids are given. Studies conducted in the breeding department of the ARRIVG (ARRIVG – a branch of the FSBI FSCV) showed great prospects for the use of gene carriers of various marker traits, especially those that determine the brown colour of the seed endosperm (bs and bs-2 genes) and an undifferentiated peduncle (j-2 gene) in the heterosis breeding of tomatoes for greenhouses. Hybrids and breeding lines created using these marker traits are unique in their own way and are a priority achievement of this scientific institution, since they are of great interest for the heterosis breeding of tomato as a basic material. A number of F1 hybrids are included in the State Register of Breeding Achievements allowed for use (Udacha, Golubchik, Klad ovoschevoda, Zaur, etc.). Due to the development of farming and amateur vegetable growing in recent years, some attention has been paid to the creation of new mutant lines with pink, crimson and dark brown fruits with high taste qualities (given that samples of this type are in high demand among the population and are more expensive). When creating new heterotic hybrids, these features of the parent forms were taken into account.


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