International Journal of Grid and Distributed Computing Vol. 13, No. 1s, (2020), pp. 126-128 126 ISSN: 2005-4262 IJGDC Copyright ⓒ 2020 SERSC Evaluation Of Mechanical And Chemical Treatments On Seed Coat Imposed Dormancy In Moth Bean Ashish Lambat 1 , Rajesh Gadewar 2 , Prachi Lambat 3 1 Assistant Professor Sevadal Mahila Mahavidyalaya and Research Academy,Nagpur (MS 2 Associate Professor, Sevadal Mahila Mahavidyalaya and Research Academy,Nagpur (MS) 3 Assistant Professor, D R B SindhuMahavidyalaya,Nagpur (MS) E-mail-lambatprachi@gmail.com Abstract Five genotypes of moth bean were sown during 2016. The seeds after harvesting, threshing and processing were evaluated for their hardseededness dormancy. The findings of the present study indicate that concentrated sulphuric acid, hot water, sand scarification and hot air oven methods are effective for reducing hardseededness in moth bean. All the above mentioned treatments showed injuries effect to the seed embryo by increasing the dead seeds and abnormal seedlings except concentrated sulphuric acid treatment. In general concentrated sulphuric acid treatment for 60 seconds have been found most effective for breaking seeds coat dormancy and also significantly highest germination percentage compared to the above mentioned treatments under taken in the present investigation. Keywords: Moth bean, dormancy, hard seed coat, germination, seedling vigour, field emergence. 1. Introduction Seeds dormancy is defined as the state in which seeds are prevented from germination even under favorable conditions for germination. The impermeability of seed coat to water is typical example of exogenbility are known as hard seeds. This impermeability may be due to the presence of a cuticle and a well developed layer of palisade cells or both. Cutin deposits have been reported by Thronton (1968). The development of hard seeds has been reported to be influenced both by genotypic and environmental factors (Puri and Laudlaw, 1984) Most of the legume crop plants produce hard seeds to varying percentages. Most workers have found this trait to be highly heritable. However, the available literature does not clearly state the developmental stage in which the seed develops into hard seed. Hardseededness in moth bean creates problems in testing for germinability under laboratory conditions. Due to this state of affair there is great problem under field condition in securing uniform germination and good crop stand for maximum crop production. The present study was undertaken to evaluate the methods to overcome hardseededness in moth bean. 2. Materials And Methods Five genotypes of moth bean viz. No.- 88, MBS-27, Local-1, Local- 2 and Local-3 were used in the various phases of this study, produced in 2016. Hard seeds which did not imbibe water were sorted out from the normal seeds which imbibe water. To evolve a quick method for breaking hardseededness in five genotypes of moth bean, the hard seeds were trated by concentrated sulphuric acid (for 30 and 60 seconds), hot water (100 o C for 120 and 180 seconds), sand scarification (100 o C for 240 and 480 seconds) hot air oven (140 o C for 15 and 30 seconds) and untreated (control) For germination test in laboratory, the germination medium used was rolled towels paper under controlled conditions (i.e. temperature at 25 +2 o C constant and relative humidity 85%).The germination was tested in quadruplicate with 100 seeds in each replication. The germination count