Abstract
Frequency and spectrum of macromutations was recorded in M2 generation of three onion varieties raised after seed treatment with different doses of gammarays and three chemical mutagens EMS, NMU and EI. The order of mutation frequency observed in three varieties was Pusa Red > Pusa Ratnar > White Warangal. Of the total number of macromutations detected in M2, chlorophyll mutations accounted for more than 60 per cent in the three varieties. Sectorial mutations or chimerism in true sense was absent in the types of chlorophyll mutations. These events in onion were described by adopting a suitable nomenclature, like solid albina, inner and outer albina, indicating the position of mutated leaves. A total of 29 different types of morphological mutations affecting foliage, bulb formation, flowering, seed and growth habit were recorded in three varieties. Some of the mutations recovered in the present experiment with ‘tall plant’, ‘waxless leaves’, ‘pink flowers’ and bulb colour are being evaluated further for their genetical behaviour and to find the possibilities of their use in onion breeding programmes.
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Claims 5
Claim · model-written summary
Mutation frequency in M2 of three onion varieties followed the order Pusa Red > Pusa Ratnar > White Warangal.
- Taxon
- onion
Allium cepae0 - Outcome
- mutation frequencye1
- Qualifier
- Pusa Red > Pusa Ratnar > White Warangale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three onion varieties”
e1“The order of mutation frequency observed in three varieties was Pusa Red > Pusa Ratnar > White Warangal”
Claim · model-written summary
Chlorophyll mutations accounted for more than 60 per cent of the macromutations detected in M2 in the three onion varieties.
- Taxon
- onionAllium cepae0
- Outcome
- chlorophyll mutationse1
- Value
- more than 60 per cente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three onion varieties”
e1“Of the total number of macromutations detected in M2, chlorophyll mutations accounted for more than 60 per cent in the three varieties”
Claim · model-written summary
Sectorial mutations or chimerism in the true sense were absent among the chlorophyll mutation types in onion.
- Taxon
- onionAllium cepae0
- Outcome
- Sectorial mutations or chimerisme1
- Qualifier
- absent in the types of chlorophyll mutationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three onion varieties”
e1“Sectorial mutations or chimerism in true sense was absent in the types of chlorophyll mutations”
Claim · model-written summary
The chlorophyll mutation events in onion were described with a nomenclature such as solid albina and inner and outer albina.
- Taxon
- onionAllium cepae0
- Outcome
- solid albina, inner and outer albinae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three onion varieties”
e1“like solid albina, inner and outer albina”
Claim · model-written summary
A total of 29 different types of morphological mutations affecting foliage, bulb formation, flowering, seed and growth habit were recorded in the three onion varieties.
- Taxon
- onionAllium cepae0
- Outcome
- morphological mutationse1
- Value
- 29 different typese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three onion varieties”
e1“A total of 29 different types of morphological mutations affecting foliage, bulb formation, flowering, seed and growth habit were recorded in three varieties”