Development of new promising varieties of faba bean through traditional pedigree method for commercial cultivation in plain zone of India

A long term experiment was carried out in MAP Section, Department of Genetics & Plant Breeding,  CCS Haryana Agricultural University, Hisar from 2005-06 to 2018-19 on identification of elite genotypes from germplasm and their utilization in the development of high yielding variety through hybridization followed by traditional pedigree method to obtain desirable transgressive segregants in Faba bean. In the present investigation a number of germplasm lines were screened for seed yield and other related traits including national check Vikrant during 2005-06 under AICRN in augmented block design. As a result, ten elite genotypes identified i.e. EC117755, EC117799, EC248710, EC329675, HB123, HB180, HB430, HB204, HB 430, HB 502, HB 503 & one check variety, Vikrant. By using these elite genotypes, a number of F1 hybrids were made during 2005-06 and F2 to F6 generations were evaluated to identify the superior progenies during 2007-08 to 2011-12. After a long process of evaluation, rejection and selection, 20 superior transgressive segregant homozygous progenies were identified to make new entries. Later on, during 2012-2013, the superior entries (viz. HB12-1, HB12-5, HB12-8, HB12-9, HB12-11, HB12-12, HB12-13, HB12-14, HB12-15, HB12-26, HB12-28, HB12-29, HB12-30, HB12-31, HB12-34, HB12-36, HB12-37,HB12-38, HB12-39 and HB12-42) were evaluated at Hisar centre against Vikrant and found promising. Therefore, all these 20 genotypes were evaluated in SST during 2013-14, LST during 2014-15 and FYT during 2015-16. On the basis of above results, only five genotypes viz. HB12-8 (47.77q/ha), HB12-42 (47.70q/ha), HB12-15 (46.70q/ha), HB12-34 (46.14q/ha) and HB12-37 (45. 31q/ha) were found promising. These were further evaluated in multi-location trials at seven locations (i.e. Ambikpur, Delhi, Faizabad, Faridkot, Hisar, Ludhiana & Ranchi) for seed yield, quality and resistance against insect pest & disease in IVT and AVT during 2016-17 & 2017-18, respectively. Out of these, HB12-34 exhibited yield superiority over national checks,Vikrant and HFB-1 and free from insect pest and disease as well as low in vicine-covicine and high in protein content. Therefore, HB12-34 may be recommended for commercial cultivation in plain zone at national level

Voids in dust clouds suspended in the plasma sheath

Voids in dusty plasma are a new phenomenon, which is still not understood. In this work we have studied experimentally for first time voids in the sheath of a radio-frequency (RF) dusty plasma. Injecting big dust particles into the plasma, we form a dust cloud in the sheath. The behaviour of the cloud as a function of RF power and gas pressure is investigated using video imaging. Both dependencies show a threshold for the void formation. This threshold is characterised by a sudden decrease in the inter-particle distance, while in the non-void mode the distance increases with power and pressure. We have performed Langmuir probe measurements of the floating potential in the bulk plasma close to the sheath in order to estimate the form of the potential well trapping the dust grains

Thermal plasma source of hydrogen atoms and ions

A cascade arc is used as a source for a H/Ar particle beam. The plasma is produced at thermal plasma conditions at 0.1 to 1 bar. It is expanded with a high velocity into a vacuum chamber. Measurements with a Langmuir double probe and with a mass spectrometer are performed. The resulting parameters of the plasma and the extd. ions are discussed. Mol. processes as charge exchange and dissociative recombination appear to be important. [on SciFinder (R)

Development of new promising varieties of faba bean through traditional pedigree method for commercial cultivation in plain zone of India

895-904A long term experiment was carried out in MAP Section (GPB), CCS HAU, Hisar from 2005-2019, beginning with evaluation of germplasm identification of superior parental lines, hybridization and selections as per the traditional pedigree method for development of high yielding varieties of Faba bean. In the present investigation, a number of germplasm lines were screened for seed yield and other related traits including a national check Vikrant during 2004-05. As a result, ten elite genotypes were identified. These selected genotypes were inter-mated to produce a series of F1 hybrids followed by raising of F2 to F6 progenies for selection of superior recombinants during 2007-08 to 2011-12. This rigorous evaluation and selection process resulted in identification of 20 superior transgressive segregant progenies which could be used as new entries. During 2012-2013, these superior entries were evaluated at Hisar center against Vikrant and were found to be promising. Consequently, these 20 genotypes were evaluated in Small Scale Trial during 2013-14, Large Scale Trial during 2014-15 and Final Yield Trial during 2015-16. On the basis of the above evaluations, five genotypes i.e., HB12-8 (47.77 q/ha), HB12-42 (47.70 q/ha), HB12-15 (46.70 q/ha), HB12-34 (46.14 q/ha) and HB12-37 (45.31 q/ha) were found to be promising. These were further evaluated in multi-location trials for seed yield, quality and resistance against insect pest and disease in IVT and AVT during 2016-17 and 2017-18, respectively. Out of these, HB 12-8 and HB12-34 exhibited yield superiority over national checks, Vikrant and HFB-1 and free from insect pest and disease as well as low vicine-convicine and high protein content. Therefore, HB 12-8 and HB 12-34 may be recommended for commercial cultivation in plain zone at national level