Induced Mutations In Vegetatively Propagated Crops

Harten, A.; Broertjes, C.

doi:10.1002/9781118061039.ch3

Cited by 33 publications

(4 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mutation breeding, such as bud sport selection and induction by radiation, offers advantages for vegetatively propagated plants because it can induce one or a few favorable changes in an outstanding cultivar without altering the remaining genotype (van Harten and Broertjes, 1989). The mutation frequency of chrysanthemum is high because the genome is heterozygous, forming an aneuploid, hexaploid complex (2n = 6x = 54 ± 7-9) (Boase et al, 1997;Broertjes, 1966;Dowrick and El-Bayoumi, 1966).…”

Section: Discussionmentioning

confidence: 99%

Mechanism behind Petal Color Mutation Induced by Heavy-Ion-Beam Irradiation of Recalcitrant Chrysanthemum Cultivar

Ohmiya

Toyoda

Watanabe

et al. 2012

J. Japan. Soc. Hort. Sci.

View full text Add to dashboard Cite

White chrysanthemum flowers frequently mutate to yellow, but such mutation is rare in 'Jimba'. We found a bud sport (BS) of 'Jimba' with a faintly yellow flower. By applying heavy-ion-beam radiation to the BS, we obtained mutants with a pale yellow flower (IB-1 lines). We irradiated those and obtained mutants with much deeper yellow flowers (IB-2 lines). Decreased expression of carotenoid cleavage dioxygenase 4 (CmCCD4a) was well correlated with increased carotenoid content in petals of the mutants. CmCCD4a comprises a small gene family in the 'Jimba' genome; at least 4 homologs were expressed in the petals of wild-type 'Jimba' and BS, but only 3 were expressed in the petals of IB-1 and only 1 in IB-2. We hypothesize that the decreased number of CmCCD4a homologs caused by irradiation is responsible for the decrease in expression.

show abstract

Section: Discussionmentioning

confidence: 99%

Mechanism behind Petal Color Mutation Induced by Heavy-Ion-Beam Irradiation of Recalcitrant Chrysanthemum Cultivar

Ohmiya

Toyoda

Watanabe

et al. 2012

J. Japan. Soc. Hort. Sci.

View full text Add to dashboard Cite

show abstract

“…Induced mutagenesis is a valuable tool in altering only few genes while conserving plant genetic background [88][89][90]. Gamma irradiation (Co60) and chemical mutagens are used to induce mutations on seeds or buds, producing several times more mutants than spontaneous mutations.…”

Section: Biotechnology Approach To Develop and Select Msd Tolerant/rementioning

confidence: 99%

An Overview on Citrus Mal Secco Disease: Approaches and Strategies to Select Tolerant Genotypes in C. limon

2019

Crop Breed Genet Genom.

View full text Add to dashboard Cite

Citrus is an economically important fruit crop that is seriously afflicted by several biotic stress, caused by both viruses and fungi, thus, new sustainable strategies to manage these diseases are needed. Lemon (Citrus limon (L.) Burm. f) is a tree in the Rutaceae family and after orange and mandarin, is the third most important Citrus species. Lemon fruits contain important bio-compounds and have central role in prevention of diseases of a balanced diet. Among C. limon diseases, "mal secco" is a highly destructive tracheomycotic fungal infection spread over the coasts of the Mediterranean basin and the Black Sea areas. The causal agent is the mitosporic fungus Phoma tracheiphila (Petri) Kantschaveli & Gikachvili (syn. Deuterophoma tracheiphila Petri). The pressure of disease has led to a marked decline of the Mediterranean's lemon crop acreage in the last 30 years. The present review explores the state of art in the struggle against mal secco disease (MSD), summarizing main results obtained from both conventional and unconventional breeding approaches. In addition, the strategies used to study the mechanisms involved in P. tracheiphila/lemon interaction and the results obtained to isolate key genes activates in tolerant genotypes are also described in depth. The overview of emergent approaches and technologies is focused to highlight the progress obtained using advanced lemon-breeding methods and suggest guidelines for future research.

show abstract

“…1980;Broertjes and Van Harten 1988;Van Harten and Broertjes 1989). In fact, induction of mutations in chry-santhemum is a common practice and the number of commercial cultivars derived from mutation breeding exceeds several hundreds (Broertjes et a1.…”

Section: Mutation Breedingmentioning

confidence: 99%