Rhodes grass breeding in Kenya II. Clonal evaluation for seed yield within maturity classes of two varieties

Euphytica ◽  
1978 ◽  
Vol 27 (2) ◽  
pp. 419-426 ◽  
Author(s):  
J. G. Boonman
Keyword(s):  
Seed Yield ◽  
Rhodes Grass ◽  
Grass Breeding

scholarly journals Effect of Spacing on Seed Yield of Indigenous Rangeland and Forage Grass Species Grown under Drip Irrigation

2009 ◽  
Vol 14 ◽  
pp. 1
Author(s):  
Saleem K. Nadaf ◽  
Safaa M. Al-Farsi ◽  
Saleh A. Al-Hinai ◽  
Abdul Aziz S. Al-Harthi ◽  
Ahmed N. Al-Bakri
Keyword(s):  
Seed Yield ◽  
Drip Irrigation ◽  
Seed Quality ◽  
Grass Species ◽  
Row Spacing ◽  
Plant Spacing ◽  
Cenchrus Ciliaris ◽  
Rhodes Grass ◽  
Chloris Gayana ◽  
Narrow Row

Two indigenous rangeland forage species, Cenchrus ciliaris and Coelachyrum piercei, were investigated for their response to varying inter-row (50 and 100-cm) and inter plant spacing (25, 50 and 100-cm) under drip irrigation along with the perennial popular forage, Rhodes grass (Chloris gayana). Expression of traits, such as plant stand, plant height, number of tillers, number of panicles and seed yield, differed under varying inter-row and inter-plant spacing in different harvests. The grass species produced higher seed yield due to less interplant competition under wider (100-cm) than under narrow row (50-cm) spacing. Chloris gayana produced highest mean seed yield in wider inter-plant spacing (100-cm) under both inter-row spacings, viz. 100-cm (488 kg/ha) and 50-cm (449 kg/ha), followed by Cenchrus ciliaris (449 kg/ha under 100-cm and 377 kg/ha under 50-cm row spacing) and Coelachyrum piercei (274 kg/ha under 100-cm and 210 kg/ha under 50-cm row spacing). In respect of seed quality for samples harvested selectively or in bulk, the three grasses showed very low germination when tested immediately (1-2 weeks) after harvest, not only for bulk seed (0 to 1.5%) but also for selected seed (0.8% to 2.8%). Mean germination of grass species recorded after 12 months of harvests was significantly greater (53 %) than that recorded after 5 months (34 %) of harvests. Of the three grass species, Cenchrus ciliaris recorded significantly (p<0.01) highest germination % (50 %) followed by Chloris gayana (41 %) and Coelachyrum piercei (39 %). Selected seeds had significantly (p<0.01) higher germination (53 %) than bulk seeds (33 %).Keywords: 

scholarly journals Experimental studies on seed production of tropical grasses in Kenya. 4. The effect of fertilizer and planting density on Chloris gayana cv. Mbarara.

1972 ◽  
Vol 20 (3) ◽  
pp. 218-224
Author(s):  
J.G. Boonman
Keyword(s):  
Seed Yield ◽  
Crop Yields ◽  
Experimental Studies ◽  
Planting Density ◽  
Rhodes Grass ◽  
Clean Seed ◽  
Chloris Gayana ◽  
Seed Crops ◽  
Seed Yields ◽  
Germinable Seed

Rhodes grass sown broadcast or in rows 25-100 cm apart at 0.2-1.8 kg pure germinable seed/ha was given 0-80 kg seedbed P2O5 and 0-200 kg N/ha for each seed crop. Yields of DM in the establishment year were significantly higher at high seed rates and close spacing, whereas yields of clean seed were decreased from 145 kg/ha (50-cm rows) at the lowest seed rate to 110 kg/ha at the highest. Seed yields were highest, 160 kg/ha, from broadcast sowings at 1 kg/ha. Yields of pure germinable seed were not significantly affected by treatment. In 6 seed crops taken after establishment, the only factor of importance for seed yield was N; yields of pure germinable seed increased from 6.2 kg/ha without N to 36.7-41.0 kg/ha at 100 kg N/ha and 41.2-43.2 kg/ha at 150 kg N/ha. DM yields from these 6 crops were higher at the wider row spacings. Increased N and wider spacing accelerated the onset of heading. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Effect of Nitrogen Level on Herbage and Seed Yield of Rhodes Grass (Chloris gayana)

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Mulisa Faji Dida ◽  
Alemeyehu Abebe Lemore ◽  
Kedija Ahmed Seid
Keyword(s):  
Seed Yield ◽  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Agricultural Research ◽  
Block Design ◽  
Dry Matter Yield ◽  
Fertilizer Rate ◽  
Rhodes Grass ◽  
Economic Point ◽  
Chloris Gayana

Nitrogen is the most important macronutrient for forage and food crop production. Currently, cultivable lands in Ethiopia undergo a deficiency of this element. Thus, this study was conducted to find an appropriate rate of nitrogen (N) fertilizer for the better agronomic performance of Chloris gayana Masaba. The experiment was carried out at Assosa Agricultural Research Center. The experiment was conducted using a randomized complete block design with three replications, and the treatments were five levels of nitrogen fertilizer (0, 23, 46, 69, and 92 kg N/ha). The collected data were analyzed using the general linear model procedure of SAS, and the least significance difference was used for mean separation. Plant height at forage harvesting, dry matter yield, leaf to stem ratio, leaf height, number of leaves per plant, number of tillers, and seed yield were significantly ( p < 0.001 ) influenced by the year of planting while nonsignificantly ( p > 0.05 ) by nitrogen fertilizer rate and interaction of planting year and fertilizer rate. The mean leaf to stem ratio was significantly ( p < 0.001 ) higher in 2017 and 2018 than in the 2019 planting year. However, forage dry matter yield was significantly ( p < 0.001 ) higher in 2019, followed by 2018 and 2017 planting years. Mean seed yield was significantly ( p < 0.001 ) different among the establishment years and the peak seed yield productivity attained during the third year of harvesting (1st = 2nd < 3rd year of harvesting). Generally, all measured agronomic traits were not significantly responsive to the different fertilizer rates, and in the economic point of view, 0 kg of N/ha is recommended.

PERFORMANCE OF TORIA (BRASSICA COMPESTRIS SYN. RAPA L.) VARIETY: RAJ VIJAY TORIA-2 IN CENTRAL, EASTERN AND NORTH-EASTERN STATES OF INDIA UNDER RAINFED CONDITION

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
VIMLESH KUMAR TIWARI
Keyword(s):  
Seed Yield ◽  
Rainfed Condition ◽  
Significant Difference ◽  
North Eastern ◽  
Finger Printing ◽  
Quantitative And Qualitative Traits ◽  
Central Eastern ◽  
Dna Finger Printing ◽  
Mature Seeds ◽  
Weight Trait

Performance of developed genotype RMT 08-2 was evaluated in central, eastern and north-eastern states of India under rain-fed condition for quantitative and qualitative traits. It gave highest seed yield over checks in zone III and V. Morphologically plants were erect, medium spreading in nature and primary branches with dichotomous habit. Plants height ranged from 107124 (cm) which matured in 82-112 days. Mature seeds were round in shape and blackish brown in colour. No significant difference between RVT-2 and checks were observed for test weight trait. An average oil yield 485 (kg/h) was recorded over 7 places which was 10% higher than both checks i.e. 14.12% and 11.24% under AICRP trials. Maximum seed yield was obtained on farmers field during 2013-14 and 2014-15 which was 1500 (kg/h) and 1215 (kg/h) that is 33.42% and 26.30% respectively over farmers own seeds. At Morena center, highest seed yield (1753 kg/h) over Bhawani (1512 kg/h) was 15.94% higher than check whereas RVT-2 gave 2245 (kg/h) against Bhawani (1975 kg/h) which was 13.67% higher. DNA finger printing indicated that primers PUT-19, PUT-96, PUT-149, PUT-169, PUT-181 and PUT-271 are useful in generating unique profile of RVT-2 containing 27 bands for its discrimination from other varieties.

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