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Identification of Fertility Restorers and Maintainers in Pigeonpea [Cajanus cajan (L.) Millspaugh]

OAR@ICRISAT

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Relation http://oar.icrisat.org/8495/
 
Title Identification of Fertility Restorers and Maintainers in Pigeonpea [Cajanus cajan (L.) Millspaugh]
 
Creator Kumar, Sudhir
 
Subject Pigeonpea
Genetics and Genomics
 
Description An investigation was carried out at ICRISAT, Patancheru, Hyderabad, during
kharif season of 2013-14 to study identification of the fertility restorers (R-line) and
maintainers (B-line) in pigeonpea [Cajanus cajan (L.) Millsp.] genotypes and standard
heterosis in pigeonpea hybrids. A total of 20 hybrids were generated by hand
pollinating five CMS-lines with 11 male lines from diverse sources during 2012-13
kharif season. In kharif 2012-13 also study was done for effectiveness of these five
CMS lines. The study confirmed the existence of high level of male sterility (99.60 to
95.69%) in all five CMS lines used in crossing programme. The studies on fertility
restoring capacity of 11 male lines on these five CMS lines were ranged from
59.22 to 98.50% and ICPL 87119 was one of the best restorer. Among 22 genotypes,
ICPA 2043 x ICPL 87119 required minimum number of days to 50% flowering and it
was significantly earlier over mean performance and check Asha. Pigeonpea is a
considered as quantitative short-day flowering plant i.e., onset of flowering is hastened
as the day-length reduces. Moreover, both low and high temperature may also delay
flowering in pigeonpea. Out of 22 genotypes, check Maruti was the earliest to mature,
while ICPA 2048 x ICPL 20093 exhibited maximum number of days to mature. All the
hybrids were taller than both the checks (Asha and Maruti) except ICPA 2078 x ICPL
87119. Most of the hybrids were showed high number of primary and secondary
branches per plant with respect to check Asha. Among the hybrids, ICPA 2092 x ICPL
20108 had the highest number of pods plant-1. Including 22 genotypes, all hybrids
showed higher mean performance for number of sees pod-1 over checks Maruti and
Asha. Most of the hybrids performed good for 100 seed weight and Seed yield plant-1.
In this study, positive heterosis for grain yield plant-1 was noticed which may
be attributed to one or more yield components. For grain yield plant-1, 18
hybrids showed significant positive standard heterosis over Maruti and eight hybrids
showed significant positive standard heterosis over Asha
 
Date 2014
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/8495/1/sudhir%20thesis%202014.pdf
Kumar, Sudhir (2014) Identification of Fertility Restorers and Maintainers in Pigeonpea [Cajanus cajan (L.) Millspaugh]. Masters thesis, Bihar Agricultural University, Sabour, Bihar.