Regulation of gene action in Petunia hybrida: Unstable alleles of a gene for flower colour

1978 ◽  
Vol 53 (4) ◽  
pp. 157-167 ◽  
Author(s):  
F. Bianchi ◽  
P. T. J. Cornelissen ◽  
A. G. M. Gerats ◽  
J. M. W. Hogervorst
Keyword(s):  
Petunia Hybrida ◽  
Gene Action ◽  
Flower Colour ◽  
Unstable Alleles

Genes affecting flower colour and pH of flower limb homogenates in Petunia hybrida

1983 ◽  
Vol 66-66 (3-4) ◽  
pp. 271-278 ◽  
Author(s):  
P. de Vlaming ◽  
A. W. Schram ◽  
H. Wiering
Keyword(s):  
Petunia Hybrida ◽  
Flower Colour

Research note: Maternally-controlled ovule abortion results from cosuppression of dihydroflavonol-4-reductase or flavonoid-3′,5′-hydroxylase genes in Petunia hybrida

2002 ◽  
Vol 29 (12) ◽  
pp. 1500 ◽  
Author(s):  
Richard A. Jorgensen ◽  
Qiudeng Que ◽  
Carolyn A. Napoli
Keyword(s):  
Seed Coat ◽  
Petunia Hybrida ◽  
Chalcone Synthase ◽  
Flower Colour ◽  
Female Sterility ◽  
Wild Type ◽  
Direct Inhibition ◽  
Embryo Abortion ◽  
Maternal Tissue ◽  
Normal Seed

Transgenes designed to overexpress anthocyanin genes An6 (encoding dihydroflavonol-4-reductase) or Hf1 (encoding flavonoid-3′,5′-hydroxylase) in Petunia hybrida L. produced flower colour phenotypes similar to those caused by sense cosuppression of chalcone synthase (Chs) genes. However, unlike Chs, sense cosuppression of An6 and Hf1 resulted in female infertility in transgenotes exhibiting complete phenotypic suppression of anthocyanins. Female sterility appeared to be due to embryo abortion, with discolouration of ovules first appearing about 4 d post-fertilization, followed by gradual collapse of the ovule. Pollen from cosuppressed, female-sterile transgenotes placed on wild-type stigmas produced normal seed set, indicating that sterility of cosuppressed plants was maternally controlled. We suggest an hypothesis that cosuppression of An6 and Hf1 leads to accumulation of dihydroflavonols in the seed coat, a maternal tissue, and that this accumulation inhibits embryo growth, either directly or indirectly. In this hypothesis, direct inhibition of embryo growth would require that dihydroflavonols diffuse from the seed coat into the embryo and act there, whereas indirect inhibition would require that dihydroflavonols interfere with some capacity of the seed coat to promote embryo growth.

A gene for flower colour fading in Petunia hybrida

1982 ◽  
Vol 61 (1) ◽  
pp. 41-46 ◽  
Author(s):  
P. de Vlaming ◽  
J. E. M. van Eekeres ◽  
H. Wiering
Keyword(s):  
Petunia Hybrida ◽  
Flower Colour

BREEDING FOR FLOWER COLOUR IN PETUNIA HYBRIDA HORT

1981 ◽  
pp. 35-40 ◽  
Author(s):  
S.G. Kashikar ◽  
A.S. Khalatkar
Keyword(s):  
Petunia Hybrida ◽  
Flower Colour

Influence of maize Lc regulatory gene on flower colour of transgenic tobacco and petunia

2007 ◽  
Vol 4 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Yang Chi-Chun ◽  
Yu Jing-Juan ◽  
Zhao Qian ◽  
Zhu Deng-Yun ◽  
Ao Guang-Ming
Keyword(s):  
Transgenic Tobacco ◽  
Petunia Hybrida ◽  
Expression Vector ◽  
Regulatory Gene ◽  
Flower Colour ◽  
Chain Reaction ◽  
Tobacco Plants ◽  
Plant Expression Vector ◽  
Polymerase Chain ◽  
Transgenic Petunia

AbstractThe Lc regulatory gene affects the formation of anthocyanin in plants. XY355 promoter, a petal-specific promoter, was obtained from the genome of rape (Brassica napus) by polymerase chain reaction (PCR). A plant expression vector, pXY60, was constructed, which contained the maize Lc regulatory gene under the control of the XY355 promoter. The vector was introduced into tobacco (Nicotiana tabacum) and petunia (Petunia hybrida) by an Agrobacterium tumefaciens-mediated method. The flower colour of some transgenic tobacco plants was changed from light red to deep red and that of some transgenic petunia plants had changed from white to light purple.

scholarly journals Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)

2020 ◽  
Vol 80 (02) ◽  
Author(s):  
Hans Raj Mahla ◽  
Ramavtar Sharma ◽  
Sushil Kumar ◽  
Kishor Gaikwad
Keyword(s):  
Quantitative Traits ◽  
Genetic Parameters ◽  
Gene Action ◽  
Agronomic Traits ◽  
Single Gene ◽  
Flower Colour ◽  
Segregation Ratio ◽  
Cyamopsis Tetragonoloba ◽  
Qualitative Traits ◽  
Leaf Hairiness

Current study was undertaken to elucidate the inheritance qualitative traits namely, flower colour and leaf hairiness in two F2 populations comprising of 194 and 99 individuals with reference to yield and agronomic traits along with genetic parameters. The violet colour of flowers and leaf hairiness were dominant over white flower and smooth leaves, respectively. The 2-test revealed independent single gene inheritance for both the traits with joint segregation ratio of 9:3:3:1 in F2. Except for no. of pods per cluster and pods per plant, both parents (Smooth 25 and HG2-20) exhibited significant (p less then 0.05) differences for traits under investigation. A higher estimate of phenotypic coefficient of variance (PCV) than genonotypic coefficient of variance (GCV) was recorded for all the characters except test weight and clusters on branches. The heritability ranged from 24.36% (seeds per pod) to 92.32% (clusters on branches). Gene action as per skewness indicated that both duplicate and complementary interactions were playing role in the development of various traits, whereas, inheritance analysis as per kurtosis suggested that traits were oligogenic. Eventually, it can be concluded that high GCV, appearance of transgressive segregants and involvement of fewer major genes in defining the quantitative traits including yield, provided an opportunity for their genetic improvement.

The classical period in chemical genetics, Recollections of Muriel Wheldale Onslow, Robert and Gertrude Robinson and J. B. S. Haldane

1981 ◽  
Vol 36 (1) ◽  
pp. 125-154 ◽  
Keyword(s):  
Gene Action ◽  
Genetic Research ◽  
Flower Colour ◽  
Chemical Genetics ◽  
Test Tube ◽  
Not Given ◽  
Colour Variation ◽  
Chemical Genetic ◽  
Flower Pigment ◽  
The One

The title of this article requires an explanation. It was used during the 1960 Jubilee meeting of the John Innes Institute at Bayfordbury to describe the successful chemical-genetic research of the 1930s. At the time I considered it complimentary but exaggerated. However, recalling those most interesting years, I have come to agree that the description is a fair one. It is not given to many to produce a swan song forty years after shaking the last test tube, scoring the last flower pigment and publishing the last findings. I will attempt to put on record the fascinating results of the collaboration which was achieved between the chemists with their pigment syntheses, isolations and accurate qualitative identifications on the one hand and the geneticists studying the behaviour of the genes involved in flower colour variation on the other. These two advanced lines of research, so fortuitously being undertaken at the same period, complemented each other and were the first systematic uncovering, on an extensive scale, of the biochemical nature of gene action, and thus set in motion the contribution which biochemistry was to play in genetical research from then onwards.

EPISTATIC GENE ACTION USING TRIPLE TEST CROSS PROCEDURE IN ZEAMAIZE L

2019 ◽  
Vol 326 (1) ◽  
pp. 75-78
Author(s):  
M. AL-AZAWI NAGHAM ◽  
◽  
E.V. Romanova ◽  
◽  
Keyword(s):  
Gene Action ◽  
Triple Test Cross ◽  
Test Cross ◽  
Triple Test
Sign in / Sign up

Export Citation Format

Share Document