Sanjay Kumar Bishnoi M.Sc. Genetics and Plant Breeding RCA,MPUAT,UDAIPUR

1. WELCOME

2. SYNOPSIS SEMINAR
on
Presented by-
Sanjay Kumar
Major Advisor-
Dr. Amit Dadheech
Department of Plant Breeding and Genetics
RAJASTHAN COLLEGE OF AGRICULTURE
MAHARANA PRATAP UNIVERSITY OF
AGRICULTURE AND TECHNOLOGY UDAIPUR-
313001
“HeterosisandCombiningAbilityinYellowSeededMaize
(ZeamaysL.)”

3. INTRODUCTION
 Maize (Zea mays L.) is belonging to grass family Poaceae.
 Maize (2n=20) is a monoecious plant and cross pollinated
crop.
 Maize is third most important crop after rice and wheat in the
world, so maize is also known as “queen of cereals”.
 The male inflorescence (tassel) is located at the top of the plant
while the female inflorescence known as cob or silk arises
about midway at the node on the main stalk.
 Maize is generally protoandrous that is the male spikelets
mature earlier than female pistillate.
 Maize grains contain about 9 per cent protein, 4 per cent oil,
70 per cent starch and 2.7 per cent crude fiber.

4.  Maize crop in India during 2016-17 occupied an area of 98
lakh ha with production of 261.4 lakh tones and productivity of
2679 kg/ha (Govt. of India 3rd Adv. Estimation,2016-17).
 In Rajasthan it occupied an area of 9.26 lakh ha with
production of 17.02 lakh tones and productivity of 1721 kg/ha
(Govt. of Rajasthan, 2016-17).
 All these aspects will be studying undertaken in L x T mating
design using 13 lines and 3 testers. (Kempthorne, 1957)

5. OBJECTIVES
1. To estimate the magnitude of heterosis,
heterobeltiosis and economic heterosis, and
on the basis of the study, superior inbred lines
and hybrids will be identified.
2. To estimate general and specific combining
ability effects.

6.  Location - Instructional farm, Rajasthan College
of Agriculture, MPUAT, Udaipur
 Mating design - Line × Tester
 Number of genotypes - 57 (13 lines, 3 testers and 2 checks)
(Source:-AICRP on MAIZE,RCA)
 Experimental design - Randomized Block Design
 Number of
replications
- 3
 Spacing - 60 cm. x 25 cm. (R x P)
 Row length - 4.0 meters
 Crop growth season - Kharif -2018
To raise a healthy crop, all the recommended package of practices
of zone IV followed.

7. OBSERVATION TO BE RECORDED
 Days to 50 percent Tasseling
 Days to 50 percent Silking
 ASI
 Plant Height (cm)
 Plant girth (cm)
 Cob Height (cm)
 Cob length (cm)
 Cob girth (cm)
 Number of kernel Rows per Cob
 100- Grain Weight (g)
 Grain yield per plant (g)
 Harvest Index (%)
 Oil Content (%)
 Protein Content (%)
 Starch Content (%)

8. STATISTICALANALYSIS
The replication wise mean values for each trait were subjected
to following statistical analysis:-
Analysis of variance (Fisher,1930).
Estimation of relative / mid parent (MP) heterosis,
heterobeltiosis / better parent(BP) heterosis and economic
/ standard check (SC) heterosis as per Shull (1914),
Fonesca and Patterson (1968) and Meredith and Bridge
(1972) respectively.
Estimation of combining ability effects (Kempthorne,
1957).

9. THANK YOU