Estimation of genetic variance on qualitative and quantitative improvement through biometrical approach half diallel analysis in (Triticum aestivum L)

2017 ◽  
Vol 2 (02) ◽  
pp. 146-151
Author(s):  
Bijendra Kumar ◽  
D. N. Bharadwaj ◽  
Lokendra Singh ◽  
Sarvendra Kumar Gupta
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Diallel Analysis ◽  
Triticum Aestivum L ◽  
Flowering Plant ◽  
Genetic Studies ◽  
Genetic Components ◽  
Filial Generation ◽  
Selection Parameters ◽  
Half Diallel

The present investigation entitled “Genetic studies for yield and its contributing character in bread wheat (Triticum aestivum L.)” was undertaken involving 100 genotypes (10 parents +45 F1s +45F2s) of a 10- parent-diallel to study the genetic parameters for some quality and quantity attributes along with its contributing traits. The diverse wheat cultivars/ genotypes and their first as well as second filial generation was studied by resolving them in genetic component analysis and selection parameters (direct and indirect parameters). The observations were recorded on 13 characters namely, days to 75% flowering, plant height, number of reproductive tiller per plant, number of spikelets per spike, spike length, number of grain per spike, days to maturity, 1000-seed weight, ear density, duration of reproductive phase, seed hardness, protein content and yield per plant. The data recorded were subjected to different analysis. Forty five crosses in F1 generation of wheat (Triticum aestivum L.) were used for studying the character association among grain yield and its related characters. The results showed that the number of grains per spike, grain weight per spike and number of productive tillers per plant were significantly and positively associated with grain yield per plant in parents and F1 cross combinations. Dickson and Jinks (1956) extended the above methods of diallel analysis, which estimated both the degree of parental heterozygosity and comparable genetic components of variation.

Study on heterosis and combining ability through diallel mating analysis in F1 generation of Bread Wheat (Triticum aestivum L.)

2018 ◽  
Vol 3 (01) ◽  
pp. 34-43
Author(s):  
Vivek Kumar Singh ◽  
Bijendra Kumar ◽  
Lokendra Singh ◽  
Sourabh Panwar ◽  
Sandeep Kaur ◽  
...  
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Crop Improvement ◽  
Diallel Analysis ◽  
Triticum Aestivum L ◽  
Flowering Plant ◽  
Early Maturity ◽  
Days To Maturity ◽  
Economic Botanist ◽  
Half Diallel

Estimation of combining ability by half diallel analysis and magnitude of heterosis was conducted at Section of Rabi Cereals, C. S. A. University of Agriculture Science and Technology, Kanpur, UP, in a set of 10 parents received from Economic Botanist Region, Section of Rabi Cereals, Kanpur by making 45 cross combinations evaluated during winter and Rabi 2012-13 in RBD with three replications. The data on nine characters viz. days to 50 % flowering, Plant height, No. of tillers/plant, Spike length/plant, No. of grains/main spike, Days to maturity, 1000-grain weight and Grain yield/plant were utilized for present study. On the basis of GCA effects across eight charactersK9423 and K9533 (-0.76) are good and desirable for days to 75% flowering for crop improvement, grain yield per plant observed for PBW502 and PBW343. The most promising crosses showing significantly positive SCA effects for yield per plant K9423xHD2285and PBW502xPBW343, days to maturity is showing significantly negative SCA effect for NW2036xHD2285 (-9.68). Heterosis is estimated highest over better parent for yield per plant was HD2285xK9533 (16.15). These crosses should be exploited for further advancement in breeding programme for HYVs and early maturity, simultaneously.

EFFECTS OF INCREMENTAL N FERTILIZATION ON GRAIN YIELD AND DRY MATTER ACCUMULATION OF SIX SPRING WHEAT (Triticum aestivum L.) CULTIVARS IN SOUTHERN MANITOBA

1990 ◽  
Vol 70 (1) ◽  
pp. 51-60 ◽  
Author(s):  
D. T. GEHL ◽  
L. D. BAILEY ◽  
C. A. GRANT ◽  
J. M. SADLER
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Spring Wheat ◽  
Dry Matter ◽  
Root Zone ◽  
Temporal Distribution ◽  
Triticum Aestivum L ◽  
N Fertilization ◽  
Yield Response ◽  
Dry Matter Accumulation

A 3-yr study was conducted on three Orthic Black Chernozemic soils to determine the effects of incremental N fertilization on grain yield and dry matter accumulation and distribution of six spring wheat (Triticum aestivum L.) cultivars. Urea (46–0–0) was sidebanded at seeding in 40 kg N ha−1 increments from 0 to 240 kg ha−1 in the first year and from 0 to 200 kg ha−1 in the 2 subsequent years. Nitrogen fertilization increased the grain and straw yields of all cultivars in each experiment. The predominant factor affecting the N response and harvest index of each cultivar was available moisture. At two of the three sites, 91% of the interexperiment variability in mean maximum grain yield was explained by variation in root zone moisture at seeding. Mean maximum total dry matter varied by less than 12% among cultivars, but mean maximum grain yield varied by more than 30%. Three semidwarf cultivars, HY 320, Marshall and Solar, had consistently higher grain yield and grain yield response to N than Glenlea and Katepwa, two standard height cultivars, and Len, a semidwarf. The mean maximum grain yield of HY 320 was the highest of the cultivars on test and those of Katepwa and Len the lowest. Len produced the least straw and total dry matter. The level of N fertilization at maximum grain yield varied among cultivars, sites and years. Marshall and Solar required the highest and Len the lowest N rates to achieve maximum grain yield. The year-to-year variation in rates of N fertilization needed to produce maximum grain yield on a specific soil type revealed the limitations of N fertility recommendations based on "average" amounts and temporal distribution of available moisture.Key words: Wheat (spring), N response, standard height, semidwarf, grain yield

Sadash soft white spring wheat

2009 ◽  
Vol 89 (6) ◽  
pp. 1099-1106 ◽  
Author(s):  
R S Sadasivaiah ◽  
R J Graf ◽  
H S Randhawa ◽  
B L Beres ◽  
S M Perkovic ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Quality Analysis ◽  
Head Blight ◽  
Cultivar Description ◽  
Quality Specifications ◽  
Soft White Spring Wheat ◽  
End Use

Sadash is a soft white spring wheat (Triticum aestivum L.) that meets the end-use quality specifications of the Canada Western Soft White Spring class. Sadash is well-adapted to the wheat-growing regions of southern Alberta and southern Saskatchewan. Based on data from the Western Soft White Spring Wheat Cooperative Registration Test from 2003 to 2005, Sadash exhibited high grain yield, mid-season maturity, semi-dwarf stature with very strong straw, and good resistance to shattering. Sadash expressed resistance to the prevalent races of stem rust and powdery mildew, intermediate resistance to loose smut, moderate susceptibility to leaf rust and common bunt, and susceptibility to Fusarium head blight. Based on end-use quality analysis performed at the Grain Research Laboratory of the Canadian Grain Commission, Sadash had improved test weight over the check cultivars AC Reed and AC Phil and similar milling and baking performance.Key words: Triticum aestivum L., cultivar description, wheat (soft white spring), grain yield, quality, disease resistance

scholarly journals Path analysis of grain yield associated characters in Brazilians wheat genotypes (Triticum aestivum L.)

2017 ◽  
Vol 11 (11) ◽  
pp. 1406-1410 ◽  
Author(s):  
Ivan Ricardo Carvalho ◽  
◽  
Maicon Nardino ◽  
Diego Nicolau Follmann ◽  
Gustavo Henrique Demari ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Path Analysis ◽  
Triticum Aestivum L ◽  
Wheat Genotypes
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