High seed quality is essential for optimum stand establishment in Coffee. As a result, it is necessary to have seed physical, germination percent, physiological and health tests that permit rapid, objective and accurate evaluation of seed quality. This study evaluated the effect of storage time on physical, physiological, germination percent and health quality of seed lots of five coffee varieties obtained from research and commercial company. This test is conducted under ideal laboratory conditions and in the nursery site. After sample collected pure, pea-beery, cracked and shriveled seeds were measured before determining standard germination and vigor. The highest pea berry was recorded at JARC on the variety 75227(18.63), and the lowest was at LCP on the variety 74165 (8.81). In parchment coffee seed, the percentage of physical defects during seed processing affects germination and seedling viability. The standard germination test in the moisten-soft paper continues to be the most common measure of seed quality in coffee. In addition, this test requires more than two weeks before a determination of seed germination was possible. Ideally, seed quality tests efficiently differentiate between poor and good seed lots in a short period. There was high germination percent in the first planting time were recorded after one month storage than other two consecutive storage time. Normal germinated seedling reduced with in increases seed storage time and the incidence of seed/ soil -born pathogenic fungi. The germination test of seeds from laboratory under petri-dish with moist soft paper and at the nursery site also had low vigour and did not produce suitable seedlings for planting evaluated after three month storage. If after one month storage time of coffee seeds germinated more than older seeds (as our study indicates), then seedlings derived from younger may have a competitive advantage over seedlings derived from older one. In the present study, pre-emergence seedling mortality (Rotten) was greater in third month storage than in first month old seeds. This mortality partially accounted for the lower germination percentage in three month old seeds because only seeds that emerged above the soil surface were considered to have germinated is an indication of reduced vigor. In my study, in coffee seeds, seedlings from relatively low stored seeds were generally better able to withstand environmental stress than those from old seeds. Coffee seed sample from two sources stored safely to optimize coffee seedling production at the appropriate time and season with ideal climatic conditions for planting in the field.
Seed yield of any hybrid maize (Zea mays L.) variety emerges depending on parental characteristics of inbred lines used. Even though, traits of each inbred line are recorded there is no clear information about parental traits that contribute to yield and associations among those characters. The present study was conducted using 14 inbred lines at Bako National Maize Research Centre in 2018/2019 based on Randomized complete block design with three replications. Determining type and level of associations among certain parental traits of inbred lines were the primary objectives of the study. Data of PH, EH, EPO, 50% AD, 50% SD, MD, EPP, ED, EL, KPR, and TKW were collected. Analysis of variance was carried out using SAS9.3 and correlation and linear regression were tested using past 3.4 software. The mean squares revealed that there were highly significant differences existed among inbred lines for most of the traits except EPP, EA, and ED. Correlation analysis indicated that a strong positive relationship (r=0.57) exist between grain yield and plant height, ear length (r=0.57), kernel/row (r=0.62) and thousand kernel weight (r=0.58). A negative learner association was observed for grain yield with the ear aspect (r=-0.36) and plant aspect (r=-0.28) which is important for quality seed production. Linear regression shows that plant height, ear height, ear length, number of kernel/row, and thousand kernel weight are closely associated with grain yield. Hence, based on correlation and regression analyses, we conclude that these traits should be considered in selecting inbred lines in breeding programs.
The purpose of this assessment was to identify, analyse and document major policies, laws, regulations, administrative practices, governance and institutional setups that constrained private seed sector investment in Ethiopia and identify evidence based alternative solutions to improve the supply of certified seed to small holder farmers and livelihoods in the country. The study was conducted in 2017 in Oromia, Amhara, SNNPR and Tigray regions. Both primary and secondary data that comprise quantitative and qualitative data sets were used. Primary data collected using on 21 domestic and international private seed companies, 22 Key informant interviews, and 12 focus group discussions were conducted at various levels. The results of the analysis showed that there are problems connected with policy environment, institutional and administrative bottlenecks. Based on the result of the survey, 89.5 and 82.7% of the respondents replied there is inadequate marketing system and inefficient market access, respectively; 84.2% said availability of poor quality of early generation seed (EGS), and 68.4% limited availability of EGS; 71.4% respondents replied there is inadequate government support in terms of finance, and capacity development; 61.9% inadequate access to fertile land and suitable irrigable land. Hence, to improve the private seed sector investment in Ethiopia there is a need to develop a clear policy and directives across the seed value chain. In general, for the private sector to develop in the country there is a need to foster a stepwise reduction of government intervention in private seed production to ensure a level playing field between the public and private sector producers to attract more private companies to the seed sector and expand farmer choice.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.