Cell Development in the Young Seed of Two Inbred Lines of Pearl Millet, Pennisetum Americanum.

1981 ◽  
Vol 29 (5) ◽  
pp. 617
Author(s):  
MK Rao ◽  
KA Kumari
Keyword(s):  
Pearl Millet ◽  
Mitotic Cycle ◽  
Inbred Lines ◽  
Cell Development ◽  
Field Conditions ◽  
Endosperm Nucleus ◽  
Pennisetum Americanum ◽  
Young Seed

Rate of cell development in embryo and endosperm during the 1st 4 days after pollination was similar in 2 lines of P. americanum under field conditions. 1st division of the endosperm nucleus was complete within 6 h after pollination. Synchronous mitoses, the mitotic cycle, divisions within the embryo and the endosperm and embryo volume increases are described.

Corrigendum - Cell Development in the Young Seed of Two Inbred Lines of Pearl Millet, Pennisetum Americanum.

1981 ◽  
Vol 29 (5) ◽  
pp. 617
Author(s):  
MK Rao ◽  
KA Kumari
Keyword(s):  
Pearl Millet ◽  
Mitotic Cycle ◽  
Inbred Lines ◽  
Cell Development ◽  
Field Conditions ◽  
Endosperm Nucleus ◽  
Pennisetum Americanum ◽  
Young Seed

Rate of cell development in embryo and endosperm during the 1st 4 days after pollination was similar in 2 lines of P. americanum under field conditions. 1st division of the endosperm nucleus was complete within 6 h after pollination. Synchronous mitoses, the mitotic cycle, divisions within the embryo and the endosperm and embryo volume increases are described.

scholarly journals Osmotic adjustment to water stress in pearl millet (Pennisetum americanum[L.] Leeke) under field conditions

1982 ◽  
Vol 5 (2) ◽  
pp. 147-154 ◽  
Author(s):  
I. E. HENSON ◽  
V. MAHALAKSHMI ◽  
F. R. BIDINGER ◽  
G. ALAGARSWAMY
Keyword(s):  
Water Stress ◽  
Pearl Millet ◽  
Osmotic Adjustment ◽  
Field Conditions ◽  
Pennisetum Americanum

Inheritance and transmission of plastid alterations in a green–white stripe mutant of pearl millet (Pennisetum americanum)

1988 ◽  
Vol 66 (1) ◽  
pp. 179-182 ◽  
Author(s):  
M. K. Reddy ◽  
N. C. Subrahmanyam
Keyword(s):  
Pearl Millet ◽  
Inbred Lines ◽  
Nuclear Genes ◽  
Pennisetum Americanum ◽  
White Stripe ◽  
Reciprocal Crosses ◽  
Variable Expressivity ◽  
Breeding Behaviour ◽  
Mutant Genes

The breeding behaviour of the GWS-14 stripe mutant of pearl millet was tested in crosses with different normal inbred lines. The F2 segregations revealed two independently assorting recessive nuclear genes controlling the stripe phenotype with variable expressivity. Striping appeared 25 days after germination or later, suggesting the delayed expression of mutant genes. When stripe plants were crossed with pollen from normal inbreds, normal and white F1 progeny were obtained, while reciprocal crosses gave exclusively normal F1 progeny, suggesting that the white plastids are maternally transmitted in the absence of homozygous recessive nuclear genes in homoplastidic (altered plastids) egg cells. The absence of stripe progeny indicates the possible reversion of such plastids in heteroplastidic egg cells.

Identification of new sources of resistance for pearl millet downy mildew disease under field conditions

2018 ◽  
Vol 16 (4) ◽  
pp. 397-400 ◽  
Author(s):  
Ghislain Kanfany ◽  
Amadou Fofana ◽  
Pangirayi Tongoona ◽  
Agyemang Danquah ◽  
Samuel Offei ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Plant Height ◽  
Pearl Millet ◽  
Agronomic Traits ◽  
Smallholder Farmers ◽  
Inbred Lines ◽  
Field Conditions ◽  
Sources Of Resistance ◽  
Resistant Lines ◽  
Moderately Resistant

AbstractPearl millet is an important cereal crop for smallholder farmers’ food security in Africa and India. However, its production has stagnated due to several factors such as downy mildew (DM). Thus, a study was conducted to identify new sources of resistance from pearl millet inbred lines derived from a collection of landraces originated from West and Central African countries. A set of 101 lines, including 99 inbred lines from West and Central Africa along with a 7042S and SOSAT C 88 as susceptible and resistant checks, respectively, were evaluated under field conditions with infector rows in Bambey and Nioro research stations during the rainy season of 2016. Data on DM incidence and severity, plant height, flowering time, panicle length and productive tillers were recorded. The results showed highly significant differences among lines for all observed traits. Among the tested lines, 55 including SOSAT C 88 were resistant, 16 moderately resistant and 30 including 7042S were susceptible to the disease. Out of the 55 resistant lines, 20 were disease free. Hierarchical ascendant cluster analysis grouped the lines into three clusters with the DM parameters and plant height as the most discriminant factors. Cluster II contains the susceptible lines, while cluster III comprises the moderately resistant lines. The lines which belongs to cluster I were characterized by their resistance to the disease. Further use of these available new sources of resistance will be very useful for improvement of pearl millet for DM resistance and other agronomic traits.

scholarly journals METAPHASE I ORIENTATION OF CHAIN-FORMING INTERCHANGE QUADRIVALENTS: A THEORETICAL CONSIDERATION

Genetics ◽  
1984 ◽  
Vol 108 (3) ◽  
pp. 707-718
Author(s):  
Prasad R K Koduru
Keyword(s):  
Pearl Millet ◽  
Theoretical Consideration ◽  
Pennisetum Americanum ◽  
Orientation Behavior ◽  
The Third ◽  
A Chain ◽  
Metaphase I

ABSTRACT The orientation behavior of chain forming interchange quadrivalents at metaphase I was studied in three interchange heterozygotes of pearl millet [Pennisetum americanum (L.) Leeke] which involve chromosomes 1, 3, 6 and 7 in various combinations. Of these, two combinations predominantly produced rings and the third was a chain-forming type. The chain quadrivalents derived from the two ring-forming interchanges, as well as the chain quadrivalent generated by the third interchange, all showed one adjacent orientation at metaphase I (adjacent-1 or -2, depending upon the formation or failure of chiasmata and their positions in the different segments of the pachytene cross). Homologous centromere co-orientation leading to adjacent-1 and alternate-1 occurs following chiasma failure in the noncentric arms of the pachytene cross, and nonhomologous centromere co-orientation leading to adjacent-2 and alternate-2 occurs following chiasma failure in the centric arms of the pachytene cross. Thus, it has been proposed that, unlike in ring quadrivalents, a specific chain quadrivalent will have only homologous or nonhomologous centromere co-orientations at metaphase I.

RESISTANCE OF INBRED LINES AND HYBRIDS OF SUNFLOWERS (HELIANTHUS ANNUUS L.) IN A NATURAL EPIDEMIC OF ASTER YELLOWS

1960 ◽  
Vol 40 (2) ◽  
pp. 375-382 ◽  
Author(s):  
Eric D. Putt ◽  
W. E. Sackston
Keyword(s):  
Helianthus Annuus ◽  
Inbred Lines ◽  
Field Conditions ◽  
Single Plant ◽  
Aster Yellows ◽  
Helianthus Annuus L ◽  
Single Cross ◽  
Single Cross Hybrids

Resistance to aster yellows has been identified in sunflowers. In 560 inbred lines and single plant progenies, 356 showed no symptoms of the disease under field conditions. The others showed infections ranging up to 100 per cent. Six entries, observed at three points, showed a range of infection from 0 to 86 per cent and eighteen others, at two points, a range from 0 to 73 per cent. The behaviour was consistent at the different locations.The resistance to aster yellows appeared to be qualitatively inherited. Single cross hybrids between resistant and, susceptible lines showed the resistance to be dominant. It occurred in association both with susceptibility and with resistance to rust. Of 15 lines with evidence of resistance to leaf mottle disease, 13 lines also had resistance to aster yellows.

Sign in / Sign up

Export Citation Format

Share Document