Om Prakash Khedar - Academia.edu (original) (raw)
Papers by Om Prakash Khedar
Genetic Resources and Crop Evolution, 2014
The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A ... more The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A spontaneous open flower semi leaf-less mutant, was observed from segregating generation (F4) of a cross IPL 313 9 RKL 1001 in which reproductive organs were not enclosed by the keel petals and thus remained exposed. Leaves on this mutant plant was very less and random with 1–3 pairs of leaf lets whereas in normal plant leaves are present at every reproductive node with 5–7 pairs of leaf lets. A very large number of open flowers ([90 %) remained sterile in mutant plant and their progenies, though its pollen fertility was as high as the standard cultivars. The progenies of the mutant open flower plant were segregates in three morphological different plant types as (1) open flower leafless plants, (2) open flower semi leaf-less plants and (3) normal plants having cleistogamous (closed) flowers and normal bearing leaves. The open flower leafless plant were low yielder whereas open flower semi leafless progenies have good yield potential and are important source of rare novel mutant alleles for important economic traits like multiple peduncles per reproductive node, more number of flowers/pods per peduncle and long reproductive phase. The open flower trait offers opportunity for exploring hybrid technology in the lentil and mutant alleles can play a crucial role in understanding the genetics of the target trait and for improvement of lentils. Keywords Leafless Lens culinaris Multiple peduncle Open flower Spontaneous mutant
Genetic Resources and Crop Evolution, 2014
The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A ... more The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A spontaneous open flower semi leaf-less mutant, was observed from segregating generation (F4) of a cross IPL 313 9 RKL 1001 in which reproductive organs were not enclosed by the keel petals and thus remained exposed. Leaves on this mutant plant was very less and random with 1–3 pairs of leaf lets whereas in normal plant leaves are present at every reproductive node with 5–7 pairs of leaf lets. A very large number of open flowers ([90 %) remained sterile in mutant plant and their progenies, though its pollen fertility was as high as the standard cultivars. The progenies of the mutant open flower plant were segregates in three morphological different plant types as (1) open flower leafless plants, (2) open flower semi leaf-less plants and (3) normal plants having cleistogamous (closed) flowers and normal bearing leaves. The open flower leafless plant were low yielder whereas open flower semi leafless progenies have good yield potential and are important source of rare novel mutant alleles for important economic traits like multiple peduncles per reproductive node, more number of flowers/pods per peduncle and long reproductive phase. The open flower trait offers opportunity for exploring hybrid technology in the lentil and mutant alleles can play a crucial role in understanding the genetics of the target trait and for improvement of lentils. Keywords Leafless Lens culinaris Multiple peduncle Open flower Spontaneous mutant
The extent of genetic variation obtained naturally is useful in self-pollinated crops like lentil... more The extent of genetic variation obtained naturally is useful in self-pollinated crops like lentil, though the variation is very low in frequency. A single plant was isolated from a commercial population of DPL-62 in 2007-08 assuming that it is a mutant of DPL-62 with earliness and other morphological traits. Interestingly, the progenies of the isolated plant showed segregation up to sixth generation (rabi 2012-13). Wide variation was observed for days to flowering (38-66), days to maturity (95-135), reproductive phase (55-80 days), plant height (35-65 cm), pods per plant (30-185), 100seed weight (3.10 to 6.80 g), seed coat colour and other traits. Mutation at multiple loci may be the possible reason. In every generation segregation has been seen for major traits, and still the material is segregating which shows a kind of dynamic mutation. P resence of mobile genetic elements in the functional genome may also be a reason. This genetic stock can play a crucial role in understanding the genetics of the target trait and improvement of small-seed Indian lentils.
Genetic Resources and Crop Evolution, 2014
The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A ... more The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A spontaneous open flower semi leaf-less mutant, was observed from segregating generation (F4) of a cross IPL 313 9 RKL 1001 in which reproductive organs were not enclosed by the keel petals and thus remained exposed. Leaves on this mutant plant was very less and random with 1–3 pairs of leaf lets whereas in normal plant leaves are present at every reproductive node with 5–7 pairs of leaf lets. A very large number of open flowers ([90 %) remained sterile in mutant plant and their progenies, though its pollen fertility was as high as the standard cultivars. The progenies of the mutant open flower plant were segregates in three morphological different plant types as (1) open flower leafless plants, (2) open flower semi leaf-less plants and (3) normal plants having cleistogamous (closed) flowers and normal bearing leaves. The open flower leafless plant were low yielder whereas open flower semi leafless progenies have good yield potential and are important source of rare novel mutant alleles for important economic traits like multiple peduncles per reproductive node, more number of flowers/pods per peduncle and long reproductive phase. The open flower trait offers opportunity for exploring hybrid technology in the lentil and mutant alleles can play a crucial role in understanding the genetics of the target trait and for improvement of lentils. Keywords Leafless Lens culinaris Multiple peduncle Open flower Spontaneous mutant
Genetic Resources and Crop Evolution, 2014
The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A ... more The lentil (Lens culinaris Medik.) is a selfpollinated seed legume with cleistogamous flowers. A spontaneous open flower semi leaf-less mutant, was observed from segregating generation (F4) of a cross IPL 313 9 RKL 1001 in which reproductive organs were not enclosed by the keel petals and thus remained exposed. Leaves on this mutant plant was very less and random with 1–3 pairs of leaf lets whereas in normal plant leaves are present at every reproductive node with 5–7 pairs of leaf lets. A very large number of open flowers ([90 %) remained sterile in mutant plant and their progenies, though its pollen fertility was as high as the standard cultivars. The progenies of the mutant open flower plant were segregates in three morphological different plant types as (1) open flower leafless plants, (2) open flower semi leaf-less plants and (3) normal plants having cleistogamous (closed) flowers and normal bearing leaves. The open flower leafless plant were low yielder whereas open flower semi leafless progenies have good yield potential and are important source of rare novel mutant alleles for important economic traits like multiple peduncles per reproductive node, more number of flowers/pods per peduncle and long reproductive phase. The open flower trait offers opportunity for exploring hybrid technology in the lentil and mutant alleles can play a crucial role in understanding the genetics of the target trait and for improvement of lentils. Keywords Leafless Lens culinaris Multiple peduncle Open flower Spontaneous mutant
The extent of genetic variation obtained naturally is useful in self-pollinated crops like lentil... more The extent of genetic variation obtained naturally is useful in self-pollinated crops like lentil, though the variation is very low in frequency. A single plant was isolated from a commercial population of DPL-62 in 2007-08 assuming that it is a mutant of DPL-62 with earliness and other morphological traits. Interestingly, the progenies of the isolated plant showed segregation up to sixth generation (rabi 2012-13). Wide variation was observed for days to flowering (38-66), days to maturity (95-135), reproductive phase (55-80 days), plant height (35-65 cm), pods per plant (30-185), 100seed weight (3.10 to 6.80 g), seed coat colour and other traits. Mutation at multiple loci may be the possible reason. In every generation segregation has been seen for major traits, and still the material is segregating which shows a kind of dynamic mutation. P resence of mobile genetic elements in the functional genome may also be a reason. This genetic stock can play a crucial role in understanding the genetics of the target trait and improvement of small-seed Indian lentils.