000			02639nab a22003737a 4500
001			68109
003			MX-TxCIM
005			20251105090022.0
008			241113s1984 -us|||po p||| 00| 0 eng d
022			_a0011-183X
022			_a1435-0653 (Online)
024	8		_ahttps://doi.org/10.2135/cropsci1984.0011183X002400020016x
040			_aMX-TxCIM
041			_aeng
100	1		_aTsai, C.Y. _934474
245	1	0	_aRelationship of N deposition to grain yield and N response of three maize hybrids
260			_aUnited States of America : _bJohn Wiley & Sons, _c1984.
500			_aPeer review
520			_aThree maize (Zea mays L.) hybrids were evaluated for their grain yield under different levels of spring-applied anhydrous ammonia fertilizer. The N content in the vegetative tissues and grain was analyzed at the midsilk stage and at 60 days after pollination. Of the three hybrids tested, B14 ✕ Oh43 (intermediate type) responded to moderate levels of N fertility, B73 ✕ Mol7 (high-fertility type) had a great response to additional N, and Pioneer 3732 (low-fertility type) performed well under low levels of N fertilizer but reached maximum yield with only 67 kg N/ha. There are at least three factors affecting grain yield which distinguish the high-fertility from low-fertility type hybrids. These include 1) ability to absorb additional N fertilizer after the midsilk stage, 2) rate and duration of grain fill, and 3) rate of zein synthesis (kernel N sink) affected by N fertilizer. When the kernel genotype of Pioneer 3732 was modified by pollinating with pollen from B73 ✕ Mol7, the developing F1 kernels not only had grain protein concentration higher than Pioneer 3732 F2 kernels but had dry matter accumulation kinetics complementary to Pioneer 3732 and B73 ✕ Mol7. This complementation resulted in larger kernels than those obtained with selfed kernels of either hybrid. This result indicates the kernel sink is more important than the vegetative source in affecting kernel weight and grain yield.
546			_aText in English
650		7	_aGrain _2AGROVOC _91138
650		7	_aYields _2AGROVOC _91313
650		7	_aZea mays _2AGROVOC _91314
650		7	_aHybrids _2AGROVOC _91151
650		7	_aNitrogen fertilizers _2AGROVOC _91190
650		7	_aSeed filling _2AGROVOC _91911
650		7	_aZein _2AGROVOC _916128
650		7	_aProteins _2AGROVOC _91224
700	1		_aHuber, D.M. _934475
700	1		_aGlover, D.V. _933927
700	1		_aWarren, H.L. _934476
773	0		_dUnited States of America : John Wiley & Sons, 1984. _gv. 24, no. 2, p. 277-281 _tCrop Science _wG444244 _x0011-183X
942			_2ddc _cJA _n0
999			_c68109 _d68101