Abstract In the face of global water scarcity, a successful transition rice cultivation from puddled to dry direct-seeded (DDSR) is future need. A genome-wide association study was performed on complex mapping population for 39 traits: 9 seedling-establishment traits, 14 root and nutrient-uptake 5 plant morphological 4 lodging resistance 7 yield yield-contributing traits. total 10 significant marker-trait associations (MTAs) were found along with 25 QTLs associated The percent phenotypic...

Puddled transplanted system of rice cultivation despite having several benefits, is a highly labor, water and energy intensive system. In the face changing climatic conditions, successful transition from puddled to dry direct seeded (DDSR) looks must in future. Genome-wide association study was performed for traits including, roots nutrient uptake (14 traits), plant-morphological (5 lodging-resistance (4 traits) yield attributing (7 with aim identify significant marker-trait associations...

A field research was carried out at agronomy Regional Agricultural Research Station, Khajura, Banke, Nepal from June to November 2012-2013 in order evaluate drought tolerant rice genotypes under different nutrient levels artificially created stress condition during reproductive stages. The experiment conducted strip plot design with three replications. Three main-plots contain of fertilizers, each consisting 14 subplots genotypes. result revealed that the showed significant differences for...

High temperature adversely affects the plant physiological processes: limits growth and reduction in grain yield. Heat stress is often encountered to spring sowing of maize season. Twenty inbred lines were studied for days 50 % anthesis silking, anthesis–silking interval, leaf firing, tassel blast, SPAD reading senescence, ear height, area index, per plant, cob length diameter, number kernel/ear, kernel row/ear, row, silk receptivity, shelling percentage, thousand weight yield alpha lattice...

Heat stress during the flowering, pollination and grain filling periods affect maize yield its attributing traits. Twenty inbred lines were evaluated in alpha lattice design with two replications under heat condition spring season from February to June, 2016 at Rampur, Chitwan, Nepal. Meterological data showed maximum mean temperature (46.2–43.28ºC) minimum (30.52-30.77ºC) relative humidity 37.05 49.45% inside tunnel April-May which coincided periods. The analyzed statistically study...

The crop yield of lentil is below attainable levels which are mainly attributed to pathological factors especially wilt caused by Fusarium oxysporum f.sp. lentis and Stemphylium blight botryosum .Fusarium a potential threat letil production not only in Nepal but worldwide that can cause complete failure. While stemphylium recently being serious problem Bangladesh, India. In Nepal, multiple disease resistance work was reported before the present study. Two trials separately using 185...

Genotype x environment interaction was evaluated under eight environments during lentil growing season of 2013/14 and 2014/15 for grain yield their component characters twenty one promising genotypes selected from previous trial lentil.The variances estimated due genotype, genotype were found to be different significantly all the studies indicating distinct nature genotypes, interactions in phenotypic expression.High estimates sum square (SS) traits are expressed by environment.The explained...

Genetic structure of Asian wheat (Tritium aestivum L.) was investigated by the analysis two isozymes, using 648 landraces. Gene diversity over all populations 0.254, and trend an eastward decline observed. By cluster principal co-ordinate based on genetic distance among populations, thirty-three were classified into six clusters, it indicated that could be divided at least three lineages. The first lineage consisted from Turkey to Sichuan (China), suggesting spread southwest China through...

Morphological description of soybean genotypes useful in improvement program. The objective this research was to identify with high grain yield and desirable agronomic traits as well stability across environments. A set 25 were used evaluate under alpha lattice design two replications at farm National Oilseed Research Program, Nawalpur, Sarlahi; Grain Legumes Program Khajura, Banke, Institute Agriculture Animal Science, Sundarbazar, Lamjung during July November 2018. Result showed that...

Experiments were carried out to evaluate five different plant extracts against lentil stemphylium blight (Stemphylium botryosum Walr.) at the Grain Legume Research Program, Rampur, Chitwan, Nepal during two winter seasons (2011/ 12 and 2012/13) using CRD in laboratory RCBD field conditions. Water extract of Acorus calamus higher dose (8% W/V) was able check growth pathogen completely in-vitro. The mycelial inhibition (%) Xanthoxylum armatum Lantana camera 8% concentration PDA 31.17 24.56...

High temperature limits plant growth and economic yield.Heat stress is often encountered to spring sowing of maize.Twenty maize inbred lines were studied for days 50 % anthesis silking, anthesis-silking interval, leaf firing, tassel blast, SPAD reading senescence, ear height, area index, per plant, cob length diameter, number kernel -1 , row ,silk receptivity, shelling percentage, thousand weight grain yield in alpha lattice design at National Maize Research Program Rampur, Chitwan,Nepal...

National maize productivity is very low in Nepal. To increase its productivity, hybrid breeding and their cultivation are indispensible. For it, fifteen newly bred single cross hybrids of yellow were examined to select superior high GYHs (grain yielding hybrids) from the standpoint grain potentiality. In addition, dynamics chl, N conc red light absorbance-transmittance (RAT) have also RAT measure effects on yield (GY). a trial RCBD experiment was conducted open field winter subtropical...

In addition to being a major source of food, feed, and fodder, maize is one the important cereals for livelihood hill farmers in Nepal. Low productivity western hills Nepal has traditionally been associated with absence high yielding varieties. The purpose this study was find single cross hybrids that would be highly productive adaptable summer planting An alpha lattice design three replications used evaluate hundred hybrids, including checks at NMRP, Rampur; DoAR, Surkhet; Doti during...

Brown spot disease, caused by the fungus Bipolaris oryzae, is a common foliar affliction in rice plants, impacting agricultural yields worldwide. A field experiment was conducted to identify brown resistant landraces at Rampur, Chitwan during June November, 2018. set of 54 genotypes comprising 52 and two checks (resistant susceptible) were evaluated for resistance disease under condition alpha lattice design with three replicates. Area progress curve (AUDPC) values varied significantly among...

A study on lentil (Lens culinaris Medik) was carried out at Rampur, Chitwan with different sowing dates under field conditions to assess the severity of Stemphylium blight disease and yield performance during two consecutive years 2012-2014. During 2012/013, lower (3.00) higher (6.50) were recorded plants sown November 6 December 16, respectively. Early resulted in (2025 kg/ha) followed by late shown one (1213 kg/ha). Similarly, trends development similar succeeding year (2013/14). Lentil...

Callus induction is an important step in in-vitro culture valued for micropropagation, somaclonal variation, mutagenesis, synthetic seed production, transformation and genetic engineering. Callusing response of ten sugarcane genotypes viz., BO-110, BO-134, Cose-95422, Cose-98232, Cose-92423, UP-9742, BO-91, BO-135, Cose-98255, were studied under three different doses (2, 3 & 4 mg L-1) 2,4-D supplemented the callus media. was found to depend on both genotype concentration The UP-9742 most...

Genetic diversity and genetic structure of East Asian wheat populations were studied based on the analysis five isozymes using 324 landraces. Gene value calculated from frequency 31 isozyme bands varied within China, being higher in western part than eastern part. Twenty landraces classified into three major groups by cluster analysis, neighboring areas clustered together. The first group comprised most China (West), though two Xinjiang Gansu & Ningxia rather distantly related to Tibet,...

The experiment was conducted in the Horticulture farm of Institute Agriculture and Animal Science, Paklihawa, Rupandehi, Nepal from March, 2017 to June, screen varieties okra against Okra yellow vein mosaic virus under different management practices. laid out two factorial Split plot design replicated three times. Five viz. Parvati, Arka Anamika, NOH-15, Super Green Julie were used five treatments Jholmol (1:5), Azadiracthin (5ml/L), Imidacloprid (2ml/L), cow milk (100ml/L) control...