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Variability of yield traits and disease resistance in winter triticale genetic resources accessions

100%

Kociuba W., Kramek A.

Acta Agrobotanica

2014

tom 67

nr 2

A systematic gathering of winter triticale accessions was started in Poland in 1982 by the Institute of Genetics, Breeding and Seed Science at the Agricultural University in Lublin (at present its name is: Institute of Genetics, Breeding and Plant Biotechnology at the University of Life Sciences in Lublin). First, breeding lines obtained in local breeding stations were gathered. Next, accessions were imported from the following world gene banks: Beltsville, Gatersleben, and VIR. Interesting hybrid materials obtained in research centers were also included in the collection. Now, the collection includes 2349 accessions (1329 of winter triticale and 1020 of spring triticale). The evaluation is conducted in a 4-year cycle of field experiments using the same methods. The gathered accessions represent a large range of variability of both morphological and commercial traits. The large differentiation of accessions especially concerns traits such as: plant height, number and weight of grains per spike, protein content in grain, field resistance to powdery mildew, brown rust and leaf and spike diseases.

Induce physical and chemical mutagenesis for improvement of yield attributing traits and their correlation analysis in Chickpea

100%

Raina A., Laskar R. A., Khursheed S., Khan S., Parveen K., Amin R., Khan S.

International Letters of Natural Sciences

2017

tom 61

In the current scenario of sky high population and widespread food insecurity, there is an urgent need for productivity improvement of major crops like pulses, one of the most climate friendly and accessible foods for the large poor population of the world. Chickpea is an important pulse crop, having high percentage of nutritional content and is widely used as food across the world. Induced mutagenesis has proved over time as a coherent tool for modern plant breeders to improve the productivity for combating the food insecurity and malnutrition across the globe. Dry and healthy seeds of Cicer arietinum L. var. C-235 were treated with individual and combination doses of gamma rays, sodium azide and hydrazine hydrate to raise the M₁ generation. M₂ seeds harvested from M₁ plants were sown in the nest season. Bio-physiological study in M1 generation showed growth inhibition in the order viz. combination treatment>hydrazine hydrate>gamma rays>sodium azide. In M₂ generation, comparative observations were recorded for morphological variation and quantitative traits to assess the genetic response of the chickpea variety C-235 toward the different concentrations of mutagens. Observations on isolated mutants in M₂ generation revealed that 0.3% HZ + 0.02% SA was most mutagenic while 200 Gy, 0.03% SA and 0.2% HZ were highest in their individual treatment groups. In context to the frequency of morphological mutants studied in M₂ generation, dwarf mutants were found to be highest followed by tall and branching pattern mutants. Highly significant correlation coefficient between yield and other traits showed that the selection for high yielding mutants can be done on the basis of these traits undoubtedly.

Genetic parameters and correlations of collar rot resistance with important biochemical and yield traits in opium poppy [Papaver somniferum L.]

80%

Trivedi M., Tiwari R. K., Dhawan O. P.

Journal of Applied Genetics

2006

tom 47

nr 1

Collar rot, caused by Rhizoctonia solani Kühn, is one of the most severe fungal diseases of opium poppy. In this study, heritability, genetic advance and correlation for 10 agronomic, 1 physiological, 3 biochemical and 1 chemical traits with disease severity index (DSI) for collar rot were assessed in 35 accessions of opium poppy. Most of the economically important characters, like seed and capsule straw yield per plant, oil and protein content of seeds, peroxidase activity in leaves, morphine content of capsule straw and DSI for collar rot showed high heritability as well as genetic advance. Highly significant negative correlation between DSI and seed yield clearly shows that as the disease progresses in plants, seed yield declines, chiefly due to premature death of infected plants aswell as low seed and capsule setting in the survived population of susceptible plants. Similarly, a highly significant negative correlation between peroxidase activity and DSI indicated that marker-assisted selection of disease-resistant plants based on high peroxidase activity would be effective and survived susceptible plants could be removed from the population to stop further spread.

Ograniczanie wyników

1 Acta Agrobotanica

1 International Letters of Natural Sciences

1 Journal of Applied Genetics

1 Amin R.

1 Dhawan O. P.

1 Khan S.

1 Khursheed S.

1 Kociuba W.

1 Kramek A.

1 Laskar R. A.

1 Parveen K.

1 Raina A.

1 Tiwari R. K.

1 Trivedi M.

1 2017

1 2014

1 2006

Wyniki wyszukiwania

Variability of yield traits and disease resistance in winter triticale genetic resources accessions

Induce physical and chemical mutagenesis for improvement of yield attributing traits and their correlation analysis in Chickpea

Genetic parameters and correlations of collar rot resistance with important biochemical and yield traits in opium poppy [Papaver somniferum L.]