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

2021 ◽  
Author(s):  
Lokesh Kumar Verma Kumar Verma ◽  
B. D. Biradar ◽  
S. S. Patil ◽  
S. N. Chattannavar ◽  
V. S. Kubsad
Keyword(s):  
Grain Size ◽  
Comparative Analysis ◽  
Sorghum Bicolor ◽  
Male Sterility ◽  
Seed Set ◽  
Male Sterile ◽  
Pests And Diseases ◽  
Near Future ◽  
Sorghum Bicolor L

Abstract 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 A2, A3, A4, maldandi, VZM and G1 have been discovered. The availability of restorers on these sources is very difficult 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 five restorers viz., IS 19389, IS 995, IS 28389, IS 26046 (BRJ 67 − 8) and DSMR-8 restored fertility on 104A, two lines viz., IS 29335 and IS 26046 restored on 401A, while on M31-2A six lines viz., IS 19975, BRJ-67-4 (DSMR-4), BRJ 67 − 8 (DSMR-8), BRJ 67 − 16, BRJ 67 − 19, BRJ 67 − 21 restored the fertility. only two lines DSMR-8 and DSMR-4 exhibited stable, consistent and strong restoration (> 90% seed set) across the seasons (rabi-2017 and kharif-2017) and years (2017 and rabi-2018). All the used MS lines exhibited the restoration complexity in the following order − 104A < 401A < M31-2A.

scholarly journals Identification of stable restorers for diverse cytoplasmic source in Sorghum [Sorghum bicolor (L.) Moench.]

2020 ◽  
Vol 80 (02) ◽  
Author(s):  
N. Sandeep ◽  
Basavaraj Biradar
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Sorghum Bicolor ◽  
Seed Set ◽  
Fertility Restoration ◽  
Male Sterile ◽  
Commercial Exploitation ◽  
M 31 ◽  
Fertility Restorers ◽  
Sorghum Bicolor L ◽  
Sorghum Germplasm

In sorghum [Sorghum bicolor (L.) Moench.], milo is the lone source of cytoplasmic male sterility (CMS) extensively used in production of commercial hybrids. The hazards of such a narrow cytoplasmic base are apparent and consequently new diverse sources like A2, A3, A4, maldandi, VZM and G1 were identified. However, the commercial exploitation of these sources has not been possible because of the difficulty in fertility restoration on these sources. The present study was, therefore, undertaken to test different sorghum germplasm lines for their fertility restoration/maintenance on maldandi and milo cytoplasm. Twenty-five diverse accession were selected from minicore collection and crossed with two male sterile lines viz., 104A (milo) and M 31-2A (maldandi). The resulting F1s were classified as fertility restorers and maintainers based on seed set on bagged ear heads. The restoration studies indicated that 2 lines on maldandi and 6 on milo cytoplasm showed strong fertility restoration (> 90 % seed set).

scholarly journals Experimental studies on pollen-mediated gene flow in Sorghum bicolor (L.) Moench using male-sterile bait plants

2010 ◽  
Vol 130 (2) ◽  
pp. 217-224 ◽  
Author(s):  
I. Y. Rabbi ◽  
H. K. Parzies ◽  
D. Kiambi ◽  
B. I. G. Haussmann ◽  
R. Folkertsma ◽  
...  
Keyword(s):  
Gene Flow ◽  
Sorghum Bicolor ◽  
Experimental Studies ◽  
Male Sterile ◽  
Bait Plants ◽  
Sorghum Bicolor L

scholarly journals Wild Nicotiana Species as a Source of Cytoplasmic Male Sterility in Nicotianatabacum

2002 ◽  
Vol 20 (4) ◽  
pp. 301-311
Author(s):  
V Nikova ◽  
R Vladova
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Wild Species ◽  
Seed Set ◽  
Seed Proteins ◽  
Nuclear Interaction ◽  
Reproductive Organs ◽  
Normal Female ◽  
Male Sterile ◽  
Male Organ

AbstractThe results of our experiments executed to obtain tobacco male sterile lines through interspecific hybridization are summarized. Ten wild species from the genus Nicotiana: N. excelsior (exc), N. amplexicaulis (amp), N. rustica (rus), Nicotianaglauca (gla), N. velutina (vel), N. benthamiana (ben), N. maritima (mar), N. paniculata (pan), N. longiflora (lon) and N. africana (afr) were used as cytoplasmic donors and N. tabacum, cv. HarmanliiskaBasma (HB) as a donor of the nucleus. Genetic effects of cytoplasmic-nuclear interaction of the studied species are discussed. Our results suggested that cytoplasmic male sterility (CMS) was expressed when the cytoplasms of the above mentioned wild Nicotiana species were combined with the nucleus of N. tabacum. The 10 sources of CMS obtained in tobacco were characterized by altered flower phenotypes. Flowers are classified into types according the stamen, pistil and corolla modification. All these CMS sources were backcrossed to Oriental tobaccos, cvs. Tekne, Nevrokop B-12, Kroumovgrad 90 and Djebel 576, to develop corresponding CMS lines. The investigated cytoplasms produced compete male sterility in all those cultivars. The CMS lines preserved flower types, specific for every “sterile” cytoplasm. The extent of male organ modifications varied from apparently normal (but pollenless) stamens in CMS (pan), (afr), some plants of (vel) (mar) through different degrees of malformations (shriveled anther on shortened filaments (lon), pinnate-like anthers on filaments of normal length (amp), petal - (ben), pistil- or stigma-like structures (rus), (gla)) to lack of male reproductive organs in (exc) and in some plants of (vel), (mar), (rus) and (gla). Most of the above mentioned cytoplasms had normal female gametophyte and good seed productivity. Alterations of the pistils were observed in CMS (rus), (exc) and (ben) causing reduction of the seed set. Electrophoresis of seed proteins of the tobacco cultivars and their CMS lines also suggested that the nuclei of wild species was entirely displaced by the nucleus of N. tabacum. CMS lines with cytoplasms of N. velutina, N. maritima, N. paniculata, N. longiflora and N. amplexicaulis were selected as suitable for seed production in tobacco.

scholarly journals Combining ability and heterosis as influenced by male-sterility inducing cytoplasms in sorghum [Sorghum bicolor (L.) Moench]

Euphytica ◽  
2006 ◽  
Vol 154 (1-2) ◽  
pp. 153-164 ◽  
Author(s):  
Belum V. S. Reddy ◽  
S. Ramesh ◽  
P. Sanjana Reddy ◽  
B. Ramaiah
Keyword(s):  
Sorghum Bicolor ◽  
Male Sterility ◽  
Combining Ability ◽  
Sorghum Bicolor L

DISTANCE FROM POLLEN SOURCE AND YIELDS OF MALE STERILE SUNFLOWER AND SORGHUM

1984 ◽  
Vol 64 (4) ◽  
pp. 857-861 ◽  
Author(s):  
ROBERT G. ROBINSON
Keyword(s):  
Sorghum Bicolor ◽  
Helianthus Annuus ◽  
Seed Yield ◽  
Efficient Production ◽  
Production Plant ◽  
Hybrid Seed Production ◽  
Male Sterile ◽  
Helianthus Annuus L ◽  
Sterile Seed ◽  
Sorghum Bicolor L

Efficient production of hybrid sunflower (Helianthus annuus L.) and sorghum (Sorghum bicolor (L.) Moench) seed requires a minimum but adequate proportion of the land for pollinator rows and that the male sterile and pollinator rows accommodate production machinery. The objective of this research was to determine the effect of distance from pollen source on male sterile seed yield and if presently used ratios of male sterile to pollinator rows could be increased without reduction in seed yield of the male sterile parent from the land area occupied by both parents. Seed was harvested from male sterile rows located from 1 (76 cm) to 40 (30 m) rows from the pollen source. Correlations and regression analyses showed that yield per row declined linearly with distance from the pollinator rows. However, yield of the male sterile parent per hectare of area occupied by both parents was increased by including up to at least six male sterile and two pollinator rows per strip. Male sterile to pollinator row ratios of 12:1 for sunflower and 7:1 for grain sorghum did not differ significantly from the commonly used 3:1 ratio in yield of male sterile parent per hectare of area occupied by both parents.Key words: Helianthus annuus L., Sorghum bicolor (L.) Moench, hybrid seed production, plant breeding

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