Exploring Superiority of Different Cotton (Gossypium hirsutum. L) Genotypes Through the Application of Parametric Stability Models
Mare Marco,
Chapepa Blessing,
Mubvekeri Washington,
Kutywayo Dumisani
Issue:
Volume 10, Issue 4, August 2022
Pages:
130-138
Received:
14 June 2022
Accepted:
29 June 2022
Published:
9 August 2022
DOI:
10.11648/j.jps.20221004.11
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Abstract: Cotton (Gossypium hirsutum) is an important cash crop worldwide mainly grown for its unique natural fibre hence considered as an industrial and agricultural crop. Cotton Variety Development Programme in Zimbabwe has the mandate to develop cotton varieties which are superior in terms of the field and fibre attributes and such varieties increases cotton production and productivity. A Multi locational Yield Evaluation (MYE) study which aimed to select superior cotton genotypes through the use of different stability models was conducted in Zimbabwe at fifteen various locations from 2014/15 – 2020/21 season. Fifteen genotypes that are in the advanced stage of testing before final recommendation for possible release were evaluated. The trials was laid out in a Randomized Complete Block Design (RCBD) and replicated three times. Genstat 18th Edition was used to generate the Analysis of Variance (ANOVA), genotype stability and environments performance. Results from the accumulated Analysis of Variance (ANOVA) of seed cotton yield indicated highly significant differences (P<0.001) due to genotypic, environmental, and GE interaction effects revealing more contribution (43.1%) of the total variation due to the environmental effects hence environments were variable and caused many fluctuations in seed cotton yield. Genotypic effects and GEI explained 0.9% and 8.7% respectively to the total variation whilst the seasons contributed about 19.7%. Matikwa and Chitekete recorded the highest total seed cotton of 3567kgha-1 and 3534kgha-1 respectively followed by Chizvirizvi that scored 2681kgha-1. Stability parameters, both multivariate and univariate were used in the study. Genotype and Genotype by Environment (GGE) biplot indicated that SZ-95-23 was an ideal, high-performing, and stable genotype and was the winner at ten test locations. Use of Wricke’s Ecovalence and Finlay and Wilkinson’s models also indicated that SZ-95-23 was the superior genotype possessing good yield performance, stability, and wide adaptability, recomended for commercial release and cultivation.
Abstract: Cotton (Gossypium hirsutum) is an important cash crop worldwide mainly grown for its unique natural fibre hence considered as an industrial and agricultural crop. Cotton Variety Development Programme in Zimbabwe has the mandate to develop cotton varieties which are superior in terms of the field and fibre attributes and such varieties increases cot...
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Performance Evaluation of Improved Mung Bean (Vigna radiata L.) Varieties at Kile Harari People Regional State
Gezu Degefa,
Motuma Delesa,
Abebe Getachew,
Habte Biranu,
Mohammed Jafar,
Girma Wakgari
Issue:
Volume 10, Issue 4, August 2022
Pages:
139-141
Received:
27 June 2022
Accepted:
28 July 2022
Published:
12 August 2022
DOI:
10.11648/j.jps.20221004.12
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Abstract: Mung bean (Vigna radiata L.) also known as Green gram is a self-pollinated leguminous crop and is among the most important pulse crops of the world. The experiment was conducted at Kile village of Harari regional state on farmers’ field during the main cropping season under rain fed with the objective to investigate and select the best adapted mung bean variety for the study area. The experiment consisted of seven mung bean varieties including local check arranged in randomized complete block design with three replications. The analysis of variance revealed that there was significant (P < 0.05) difference among the varieties for number of branch per plant, pod per plant, seed per pod and grain yield. The analysis of variance showed that there was no significant (P > 0.05) difference among the varieties for plant height and number of bunch per plant. Showa robit gave the highest (969.8 kg/ha) grain yield followed by Borda (MH-97-6) (947.8 kg/ha) while the lowest (637.4 kg/ha) was obtained from local check. Shawa robit and Borda variety gave 52.12% and 48.7% yield advantages respectively over the local check. Therefore, Showa robit and Borda (MH-97-6) improved mung bean varieties were recommended for further demonstration to the study area and similar agro-ecologies.
Abstract: Mung bean (Vigna radiata L.) also known as Green gram is a self-pollinated leguminous crop and is among the most important pulse crops of the world. The experiment was conducted at Kile village of Harari regional state on farmers’ field during the main cropping season under rain fed with the objective to investigate and select the best adapted mung...
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Effect of Potassium Fertilization Source on Strawberry Yield and Quality
Amal Nakro,
Ahmed Bamouh,
Lamiae Ghaouti
Issue:
Volume 10, Issue 4, August 2022
Pages:
142-149
Received:
5 July 2022
Accepted:
18 July 2022
Published:
17 August 2022
DOI:
10.11648/j.jps.20221004.13
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Abstract: The purpose of this research is to investigate the effect of potassium fertilizer source by fertigation on strawberry productivity and quality parameters. The trial was conducted during 2015-2016 in the experimental greenhouse of the Hassan II Agronomic and Veterinary Sciences of Rabat. Strawberry plants of the cultivar ‘Fortuna’ were planted on October 13th in 40 liter pots equipped with a gravity fertigation system. Tested treatments were (1) Potassium sulfate for the whole growing cycle (PS/PS) (2) Potassium Nitrate during the vegetative period and Potassium sulfate during the fruit production period (PN/PS) and (3) potassium Nitrate for the whole growing cycle (PN/PN). An experimental block design with three repetitions was adopted. The total amounts of applied nitrogen, phosphorus, potassium, magnesium and calcium are identical for all potassium source treatments. Potassium sulfate has a slightly higher electrical conductivity than potassium nitrate source, 1.9 dS/m and 1.6 dS/m respectively. While the two solutions have a semilar pH of 6.1. The average yield obtained is 900 g with a slight advantage for the PN/PS treatment. These differences potassium fertilization source are not statistically significant. The measured parameters of fruit quality in the normal range for strawberries with an average Brix degree of 5.3, a juice acidity level of 0.35 to 0.65 % and a dry matter content of 7.8 at 9.0 %. These strawberry quality parameters were not significantly affected by potassium fertilization source. We concluded that the both sources, potassium sulfate and potassium nitrate, have equivalent effects on strawberry productivity and quality.
Abstract: The purpose of this research is to investigate the effect of potassium fertilizer source by fertigation on strawberry productivity and quality parameters. The trial was conducted during 2015-2016 in the experimental greenhouse of the Hassan II Agronomic and Veterinary Sciences of Rabat. Strawberry plants of the cultivar ‘Fortuna’ were planted on Oc...
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Genomic Characterization and Identification of Effective Blast Resistant Genes for Sakha 101 and Sakha 108 as High Yielding Egyptian Rice Cultivars
Galal Bakr Anis,
Zeinab Abdelnaby Kalboush,
Ahmed Ibrahem Elsherif,
Raghda Mohamed Sakran
Issue:
Volume 10, Issue 4, August 2022
Pages:
150-164
Received:
8 April 2022
Accepted:
2 August 2022
Published:
31 August 2022
DOI:
10.11648/j.jps.20221004.14
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Abstract: Sakha 101 is one such short grained common Egyptian rice cultivar and known for its exquisite quality, however, is highly susceptible to blast disease that has led to considerable decline in its area. Sakha 101 was crossed to a blast gene donor line, HR5824-B-3-2-3 and followed through backcross-breeding method that helped to incorporate blast resistance genes and finally Sakha 108 was released as improved version of the most widespread Egyptian commercial rice Sakha 101. The study was to evaluate Sakha 101 and Sakha 108 for high yielding, blast resistance, and effective resistance genes to Pyricularia oryzae as well as assessment of genetic divergence based on genomic in these cultivars. There is a slight increase in the values of Sakha 108 than Sakha 101 in the most of studied traits. Also under this study, seventy isolates were identified as eight main groups i.e., IA, IB, IC, ID, IF, IG, IH and II, but ID group was considered the most common races. On the other hand, Pi-Z and Pii - Pi-ks resistance genes were the most effective genes to blast fungus. Sakha 108 proved resistance for all tested isolates under greenhouse condition compared with Sakha 101 which exhibited susceptible to 70% of tested isolates. On genomic level, out of 242 markers across the 7 chromosomes; only 6 markers (RM8236, RM13611, RM3839, RM17377, RM160 and RM27154) produced clear fragments and polymorphism between cultivars (Sakha 101 and Sakha 108) and were used to construct a genetic linkage map. A total of 39 candidate genes were identified around their regions on each chromosome. These results enrich our understanding of the differences between Sakha 101 and Sakha 108 and also provide a foundation for selecting candidate for marker-assisted selection breeding in rice.
Abstract: Sakha 101 is one such short grained common Egyptian rice cultivar and known for its exquisite quality, however, is highly susceptible to blast disease that has led to considerable decline in its area. Sakha 101 was crossed to a blast gene donor line, HR5824-B-3-2-3 and followed through backcross-breeding method that helped to incorporate blast resi...
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