Q.2. Study the following table of Soybean different maturity groups and their yi
ID: 3167207 • Letter: Q
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Q.2. Study the following table of Soybean different maturity groups and their yield in the U.S.A Maturity group Yield (bu./Acre) Length of the vegetative Length of the Reproductive period in daysperiod (seed filling period) ino 45 46 35 49 days 35 35 5 Maturity group 5 have longer vegetative growth period (45 days), however, both maturity groups have the same seed yield! 1. Explain why both soybean maturity groups have similar yield? 10 Points 2. Does the length of the vegetative growth period affected plant yield formation? Yes or No, Explain your answer. 10 Points 3. In the graph provided below draw the LAI curve for the Maturity group 00 and Maturity group 5. 5 Points napotiv H.169v aint atnioqExplanation / Answer
Growth, development, and yield of soybeans are all a result of a given variety's genetic potential interacting with its environment. Soybean varieties are classified for their morphological (form and structure) growth habit, and for their daylength and temperature requirement to initiate floral or reproductive development. The indeterminate growth habit is typical of most Corn Belt soybean varieties and is characterized by a continuation of vegetative growth after flowering begins. Determinate soybean varieties characteristically have finished most of their vegetative growth when flowering begins. Most varieties in 00 to IV display the indeterminate growth habit, and varieties in groups V to VIII are mostly of the determinate growth habit.
An early maturing variety may develop fewer leaves or progress through the different stages at a faster rate, especially when planted late. A late maturing variety may develop more leaves or progress more slowly.The rate of plant development for any variety is directly related to temperature, so the length of time between the different stages will vary as the temperature varies both between and within the growing season.Deficiencies of nutrients, moisture, or other stress conditions may lengthen the time between vegetative stages, but shorten the time between reproductive stages.Soybean grain yield can be influenced greatly by overall environmental conditions. Environmental factors such as photoperiod, precipitation, and temperature and the combination of them can greatly affect the yields.Seed yield increases of soybeans in response to increases in CO2 concentration. There were cultivars in which elevated CO2 did not affect the duration of vegetative growth or the main stem node number, and other cultivars in which elevated CO2 prolonged vegetative growth and increased the number of main stem nodes and seed yield at maturity. The stimulation in yield by elevated CO2 was highly correlated with the increase in the number of main stem nodes, indicating that CO2 effects on the duration of vegetative growth may be important in adapting soybean to higher atmospheric CO2.
And yes the vegetative growth period affects the plant yield formation. Likewise, Shorter daylength and warm temperatures control soybean flowering.Extending the period of vegetative growth, delay flowering and delay maturity due to the extended summer daylength and cooler temperatures and shorten the vegetative growth period, cause earlier flowering and result in an earlier maturity due to shorter summer daylength and warmer temperatures.
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