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Effect of EMS on induced morphological mutants and chromosomal variation in cowpea (Vigna unguiculata (L.) Walp)

100%

Gnanamurthy S., Dhanavel D.

International Letters of Natural Sciences

2014

tom 17

Effect of EMS (ethyl methane sulphonate) on induced morphological mutants and chromosomal variation in cowpea was studied using five different doses of mutagen along with a control in randomized blocked design with three replications. The morphological mutants there are two types of viable and chlorophyll mutants. Viable mutant contains tall, dwarf, early maturity, late maturity, leaf mutants pod mutant and flower mutants. The frequency of chlorophyll mutant contains albino, xantha and viridis. This concentration can damage or modify important components of plant cells and have been reported to affect the morphology, anatomy, biochemistry and physiology of plants differentially depending on the concentration level. These effects include changes in the cellular structure and metabolism of the plants e.g., dilation of thylakoid membranes, alteration in photosynthesis, modulation of the antioxidative system and accumulation of phenolic compounds. The morphological and chromosomal variation was found to be mutagen sensitive in somatic cells of cowpea. It was found to increase with increasing the concentration of EMS in Cowpea plants. The chemical mutagen like ethyl methane sulphonate induces high frequency of chromosomal changes like anaphasic bridge; anaphasic laggard, anaphasic bridge and clumbing of chromosome were including control plants also observed.

Effect of gamma rays in induced morphological mutants on M2 generation of chilli (Capsicum annuum L.) var K1

84%

Mullainathan L., Aruldoss T.

International Letters of Natural Sciences

2015

tom 03

The present study was carried out to induce morphological mutation in chilli (Capsicum annuum L.) var k1. The seeds were subjected to different treatment levels of gamma rays are 20, 30, 40, 50, 60 and 70Kr along with control. The treated and untreated seeds were raised in a randomized block design to observe the different morphological characters in M2 generation. Several unique and interesting mutants were isolated in this investigation, these independent mutants have differ from control, the most distinct mutants included tall, dwarf, bushy , flower, sterile and pod mutant, was observed in M2 generation.

Ograniczanie wyników

2 International Letters of Natural Sciences

1 Aruldoss T.

1 Dhanavel D.

1 Gnanamurthy S.

1 Mullainathan L.

1 2015

1 2014

Wyniki wyszukiwania

Effect of EMS on induced morphological mutants and chromosomal variation in cowpea (Vigna unguiculata (L.) Walp)

Effect of gamma rays in induced morphological mutants on M2 generation of chilli (Capsicum annuum L.) var K1