Genetic relationship between some cytoplasmic male sterility systems in sorghum

Kishan, A. G.; Borikar, S. T.

doi:10.1007/bf00034462

Cited by 14 publications

(9 citation statements)

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“…The hybrid plants were covered with brown paper bags to avoid cross pollination at physiological maturity. Selected panicles were harvested, observed physically for seed set and per cent seed set was calculated using the following formula (Kishan and Borikar, 1989) Seed set per cent =…”

Section: Methodsmentioning

confidence: 99%

“…Due to the complex mechanism of restoration on non-milo cytoplasms, the restoration is di cult and research is also lacking in this area. Kishan and Borikar (1989) concluded that most of the genotypes from the Indian programme give a restorer reaction against milo cytoplasm thus, identi cation of suitable restorer for milo (A 1 ) cytoplasm is quite easy. However, the milo shows poor grain quality, susceptibility to shoot y, poor fertility restoration in hybrids under rabi environment.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of restoration behavior of milo (104A, 401A) and maldandi (M31-2A) based male sterile lines in sorghum [Sorghum bicolor (L.) Moench]

Verma

Biradar

Patil

et al. 2022

Genet Resour Crop Evol

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In sorghum, milo source of male sterility has been used for developing all the hybrids so far and it created the narrow cytoplasmic base. In addition, it also narrows down the nuclear diversity which may be the invitation for the outbreak of pests and diseases in the near future. To handle this hazard new diverse sources like A 2 , A 3 , A 4 , maldandi, VZM and G 1 have been discovered. The availability of restorers on these sources is very di cult hence their utilization is also a challenging task. The present study was, therefore, carried out to test different sorghum lines for restoration behavior on two milo lines (104A and 401A) and one maldandi (M31-2A) with more emphasis on maldnadi source because of its added advantage of enhancing grain size and pest tolerance. In rabi-2017, 125 genotypes were tested for the restoration behavior on these sources, and ve restorers viz.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative analysis of restoration behavior of milo (104A, 401A) and maldandi (M31-2A) based male sterile lines in sorghum [Sorghum bicolor (L.) Moench]

Verma

Biradar

Patil

et al. 2022

Genet Resour Crop Evol

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“…R-lines contain nuclear genes that override CMS and restore male fertility in the F 1 of an A-line × R-line cross. Other similarly functioning male sterility systems have been identified in alternate cytoplasms and are classified as the A2, A3 and A4 CMS systems (Schertz and Ritchey, 1978;Schertz, 1983;Kishan and Borikar, 1989). Most commercial F 1 hybrids of sorghum are currently produced using the A1 CMS system.…”

Section: Traits Affecting Male and Female Sterilitymentioning

confidence: 99%

Safety Assessment of Transgenic Organisms in the Environment, Volume 7

2017

Harmonisation of Regulatory Oversight in Biotechnology

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“…There should be a requirement of shoot fly resistance in both the parents or at least in seed parents to realize a higher frequency of shoot fly resistance hybrids in the post‐rainy seasons. Among these alternate sources, maldandi (A 4 ) appears to be more promising for the rabi season, as it influences grain size (Kishan & Borikar, 1989) and shoot fly tolerance (Dhillon et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Among these alternate sources, maldandi (A 4 ) appears to be more promising for the rabi season, as it influences grain size (Kishan & Borikar, 1989) and shoot fly tolerance (Dhillon et al, 2005).…”

mentioning

confidence: 99%

Deciphering the inheritance of fertility restoration and influence of environmental factors on maldandi source of male sterility in rabi sorghum [Sorghum bicolor (L.) Moench]

Kariyannanavar,

Wali,

Biradar

et al. 2023

Plant Breeding

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This study aimed to investigate the inheritance pattern of fertility restoration in hybrids resulting from crosses between a male sterile line (M31‐2A), a maldandi cytoplasm, and two promising restorers (DSMR‐4 and DSMR‐8). The evaluation of hybrids was conducted in two sets of experiments, including the F2, BC1F1 and F2, F3 generations. The segregation pattern was analysed in the F2 and BC1F1 generations, resulting in a 54:10 ratio of fertile to sterile plants and a 1:1 ratio of fertile to sterile plants, respectively. This indicated the involvement of three genes, at least two of which must be in a dominant condition for restoration to occur, acting in a duplicate complementary manner. In the F3 generation, both crosses were grown to confirm the stability of restorers, and they segregated in the ratio of 10 true‐breeding families and 44 segregating families, which was consistent with the F2 ratio. Additionally, this study observed the influence of rainfall on the partial restoration pattern over seasons, as restorer genes are up or down‐regulated depending on the availability of water.

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Genetic relationship between some cytoplasmic male sterility systems in sorghum

Cited by 14 publications

References 1 publication

Comparative analysis of restoration behavior of milo (104A, 401A) and maldandi (M31-2A) based male sterile lines in sorghum [Sorghum bicolor (L.) Moench]

Comparative analysis of restoration behavior of milo (104A, 401A) and maldandi (M31-2A) based male sterile lines in sorghum [Sorghum bicolor (L.) Moench]

Safety Assessment of Transgenic Organisms in the Environment, Volume 7

Deciphering the inheritance of fertility restoration and influence of environmental factors on maldandi source of male sterility in rabi sorghum [Sorghum bicolor (L.) Moench]

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